UC-NRLF B 3 057 775 io=/t25thYEdR EDITION 1919 CHEMICALS CHEMICAL BACTERIOLOGICAL SUPPLIES GIFT OF _ ,• 1894—1919 TWENTY- FIFTH YEAR EDITION Laboratory Supplies and Chemicals for Chemists and Bacteriologists A. DAIGGER C& COMPANY 54 West Kinzie Street CHICAGO, U. S. A. Long Distance Telephones : Cable Address 6031 "CELERITAS' 6032 CENTRAL 6033 A. B. C. 6409 5th Edition 6018 Foreword IN presenting this catalog for your consideration, we wish to call your attention to some of its most distinctive features. No attempt has been made to prepare a complete list of scientific laboratory apparatus and equipment as there are many highly specialized forms of equipment to which only occasional reference is necessary. This special apparatus is covered by separate pamphlets which are available at all times. We have attempted to list all forms of standard equipment as well as those of special design, for which there is a moderately general demand. THIS CATALOG IS A COMPILATION OF EXCLUSIVELY AMERICAN MADE GOODS AND IS A TRIBUTE TO THE PROGRESS MADE BY AMERICAN MANUFACTURERS We have elected to prepare a fairly complete catalog of convenient size, rather than an encyclopedia of scientific apparatus, which would of necessity be so bulky as to be unwieldy. In the selection and arrangement of .descriptive data and illustrations, we have been guided by the requirements of those who may have occasion to use the catalog. We have made an attempt to simplify the work of ordering our merchandise, wherever it has been possible to do so, without sacrificing accuracy or necessary information. Each illustration shows either a standard type of apparatus or a characteristic feature which may be adapted to your requirements. As a general rule, the articles described in this catalog are carried in stock for immediate delivery. Other apparatus can be promptly secured or made up at a reasonable cost. Reference to other catalogs will be understood by us and the specifications cor- rectly interpreted. The utmost care is observed in checking and packing goods for shipment, and every effort is made to avoid breakage in transit. All claims for loss, damage or breakage in transit should be promptly filed against the carrier. We will assist in every way possible, the adjustment of such claims. Any complaints will be promptly and cheerfully investigated and complete satisfaction is assured. All prices are based upon actual market conditions and are subject to change without notice. Fluctuations may be expected, but our prices will be consistent with existing conditions over which we have no control. The cost of containers and packing will be charged at cost. Acid bottles, cases, ^carboys and some drums are extra and returnable for full credit at our store or warehouse. Our terms of payment are NET CASH 30 days, F. O. B. Chicago. Where no definite shipping instructions are furnished with order, we will use our own judgment, and ship by shortest and cheapest route. All shipments are made in compliance with Interstate Commerce Commission regulations. Parcel-post shipments will be made wherever possible, with a small charge for insurance. Conditions arising out of the war require our customers to obtain licenses for the purchase of ethyl alcohol and certain chemicals classified as explosives. Whenever such materials are ordered, it is imperative that certified copies of license accompany the order, as shipments cannot be made until such certificates are received. Our GLASS BLOWING DEPARTMENT is adequately equipped to repair and make up all kinds of standard and special apparatus, either plain, graduated or ground. Our BALANCE and INSTRUMENT REPAIR DEPARTMENT has been or- ganized to inspect and repair any imported or domestic balances and instruments. We take great pride in our ability to render this service and guarantee all work of this nature. We wish to thank our friends and customers for their past consideration and hope that it will continue. We solicit all inquiries, and no order is too small to receive ©ur most careful attention. Our organization has been planned for SERVICE. It is at your disposal. Faithfully yours, A. DAIGGER & COMPANY. Chicago, January. Nineteen-Nineteen. LABORATORY SUPPLIES AND CHEMICALS 1000 1000 ACID CARBOY STAND. A very useful and simple device, whereby the carrying and tilting of carboys, otherwise a difficult and dangerous operation, becomes easy and their 'contents can be poured out with safety. The carrying bars are clamped to the carboy by means of two screw bolts, which rest on the cleats of the box; these bars are of such length as to project beyond the end of the box and provide handles for carrying. The stand can be folded up in a compact manner for transportation $6.50 1006 1007 a lOOTb 1006 ACID PUMP — A convenient and handy arrangement for drawing acid, etc., from carboys, bottles, etc. Will fit any container having a neck from 1^4 to 2^ inches diameter $6.75 1007a ADAPTERS, straight; light wall, lamp blown. Length, mm 130 150 200 Diameter at large end, mm 22 30 40 Each $0.20 $0.30 $0.35 1007b ADAPTERS, curved; light wall, lamp blown; for connecting retorts with receiver*. Length, mm 130 150 200 Diameter at large end, mm 22 30 40 Each .....$0.20 $0.30 $0.35 A. DAIGGER & COMPANY, CHICAGO, U. S. A. FOR DETERMINATION OF ALCOHOL IN BEVERAGES ACCORDING TO FRITZ This apparatus, known also as the NERBEROMETER, was especially designed for the brewers and manufacturers of beverages and so-called "near" beers for the determination of alcohol content. This apparatus is recommended at this time when so many substitutes for beer are being produced on a large scale. We are prepared to furnish this apparatus complete from stock, as well as the separate items which make up the apparatus complete. The necessity for this apparatus has been brought about by the stringent requirements of the law, limiting the percentage of alcohol which these beverages (so-called "near" beers) are permitted to contain. 1011 The apparatus consists of a specially constructed copper still, gas heated, with a copper condenser, water cooled. Under proper heat control, the distillate is collected in the cylinder as shown above. An aliquot portion is withdrawn and the percentage of alcohol read with an alcoholometer. The still and condenser are made of heavy copper, water inlet and outlet on the condenser being made of lead pipe. All joints are provided with rubber gaskets. 1011 Price complete as shown $40.00 For prices on all parts which are interchangeable, as flasks, pipettes, burners, rubber tubing for gas and water, thermometers and so forth, \ see under alphabetical classification throughout the catalog. While it is impracticable to list all special apparatus required for testing materials, we wish to call your attention to our special sec- tions on Tar and Asphalt testing. We are prepared to furnish any apparatus both in Metalware and Glassware required on special tests, etc. LABORATORY SUPPLIES AND CHEMICALS 1014 1022 1028 1034 1014 ALKALIMETER— Bunsen's . , $1.75 1022 ALKALIMETER — Geissler's, latest form, with tv/o ground joints 3.00 1028 ALKALIMETER— Mohr's (latest style) 2.50 1034 ALKALIMETER— Schroedter's . . 3.00 ANNEALING CUPS, see Crucibles. 1050 1040 1042 1040 ANVIL, for Lead Buttons, 6"x6", planed on one side $1.20 1042 ANVIL, Plattner's, l^"xl^", for blowpipe work, polished steel. .50 1050 APRON, of waterproof rubber cloth, to protect the clothes from chemicals. Length 45, 48 or 50 inches, as desired 1.00 See also Sleeves and Gloves. ARSENIC TEST PLATES, see Plates, Porcelain. ARSENIC TUBES, see Tubes, Reduction. 1054 ASBESTOS— SHEETS, 42x48 inches, fire and acid-proof. Approximate weight per sheet. Thickness, inches $2 1*5 £2 l/% fs % . ZA l/2 Weight, about, Ibs 2J4 4^ 6^ 9 13 J4 17^ ^A 35 Per Ib $0.85 1056 ASBESTOS BOARDS, cut in squares. Size, inches 4x4x3*2 4x4xi3ff 5x5x3*2 SxSx'rV 6x6xg"2 6x6x1*3 Dozen $0.50 $0.80 $0.80 $1.20 $1.20 $1.80 1057 ASBESTOS CLOTH, 36 inches wide, unaffected by acid, fire, etc. Fine Medium Heavy Per yard $4.25 $5.50 $7.00 1058 ASBESTOS CEMENT, fire and acid-proof, for repairing furnaces, etc. Per 5-lb. can $1.50 1060 ASBESTOS CORD and TWINE, in one-lb. balls. Useful as a wrapping for han- dles of apparatus which become heated, and to suspend retorts, crucibles, etc. Diameter, inches 1A 1A ^ Per Ib $3.60 $3.60 $3.60 1062 ASBESTOS PADS, for protecting table under blast lamps, etc. Made of thick asbestos board edged with iron. Size, inches 8x8 10x13 13x20 Each $0.75 $1.25 $2.25 A. DA1GGER & COMPANY, CHICAGO, U. S. A. 1062 1064 ASBESTOS PAPER, useful in filtering acids, etc., in rolls 36 inches wide .of any length, one yard, weighing about 1 Ib. Per Ib $0.40 1065 ASBESTOS WOOD, so-called Asbestos Lumber, harder than wood, acid and fireproof, in sheets 42x48 inches. Thickness, inches J^ J4 -Hs Per square foot $0.40 $0.80 $1.25 The above prices are for full sheets 42x48 inches. If smaller sheets are desired, an extra charge for cutting and waste will be made. Care will be taken to cut to best advantage. ASPIRATORS— See Filter Pumps. AUTOCLAVES— See Bacteriological Apparatus. ASPHALT TESTING APPARATUS 1066 1066 CEMENTATION MACHINE, Kirschbraun's. For testing the cementa- tion values of asphalt cements. Furnished with hand power or with pulley for motor power. (The above machine is described in the Journal of the Industrial and Engineering Chemistry, Volume 6, No. 12, Decem- ber, 1914) $85.00 1067 ASPHALT BRIQUETTE MOULD 5.00 LABORATORY SUPPLIES AND CHEMICALS 1067a STANDARD METHOD FOR DETER- MINING THE SOFTENING POINT OF BITUMINOUS MATERIALS OTHER THAN TAR PRODUCTS 1067a OPERATION — Carefully melt sample and till ring with material to be tested. Remove any excess. Place ball in center of ring and suspend in beaker containing approximately 400 c. c. of water at a tem- perature of 5° C. Softening point is temperature at which specimen has dropped one inch. Successive tests should average within 3° C. For temperatures above 95° C., gylcerine should be used instead of water. RING AND BALL APPARATUS— Brass ring 15.875 m.m. (§$ in.) in diameter, 6.35 m.m. (J4 in-) deep, 2.38125 m.m. (^ in.) wall, suspended, 25.40 m.m. (1 in.) above bottom of beaker. Steel ball 9.525 m.m. (ft in.) in diameter, weighing between 3.45 g. and 3.50 g. Standardized thermometer. Glass Beaker, approximately 600 c.c. capacity. Price $10.00 1068 DUCTILITY MACHINE. Adapted for ductility and elonga- tion tests under various conditions of temperature and speed. This machine has a standard stretch of 150 centi- meters with a 5 cm. or 60 cm. speed per minute. Three test pieces can be tested at one time. It is constructed entirely of metal, porcelain lined. Furnished with direct or alternating current motor, including three briquette moulds $200.00 1069 PENETROMETER. Latest im- proved form with finest ad- justment. By testing the depth to which, under a definite load and during a given time the Standard Needle will penetrate, you can determine the consistency of the asphalt cement or similar material. The stationary dial is graduated into 100 divisions of 1/10 m.m, each. The indicator works automatically and gives absolutely correct readings $55.00 1069 1070 1070 ADHESION MACHINE, Kirschbraun's. For testing comparatively the adhesive strength of asphalt as a binder for mineral conglomerates in the construction of asphalt pave- ments. Complete with two sample cups and in- structions 23.00 1070a EXTRA CUP for No. 1070 Adhesion Machine 1.00 A. DAIGGER & COMPANY, CHICAGO, U. S. A. Standard Penetrometer 1071 1072 1071 PENETROMETER, Standard, New York Testing Laboratory Type, for measuring the depth of penetration of a standard needle into the material to be tested at 77° F. or 25° C. in 5 seconds of time under a 100 gram weight; with standard clock reading in y2 seconds and dial graduated to 1/10 mm. A set of adjustable weights is provided permitting the use of either 50 or 100 gram loads in addition to the standard of 100 grams. See "The Modern Asphalt Pavement" $75.00 1071a PENETROMETER, Miniature, exactly similar to the above but one-half the size and specially designed for engineers' portable use in making comparative tests, without clock 25.00 HOYT'S ELECTRICAL PENETROMETER 1072 HOYT'S — An electrically operated, automatic instrument for determining the consistency of asphalt and similar substances by measuring the depth to which a standard needle with a definite load will penetrate during a definite period of time, at a given temperature. FOR THE STANDARD TEST THE LEFT PUSH BUTTON IS PRESSED. This releases the needle with attached weight and penetration instantly takes place. After a lapse of exactly five seconds the needle is automatically reclamped and penetra- tion ceases. The depth of penetration is read directly from the dial, each division of which corresponds to 0.1 mm. downward movement of the needle. FOR SPECIAL TESTS the instrument may be adjusted for any variation desired. Either the 50, 100, 150, 200, 250, 300 or 350 gram test may be made with equal accuracy and speed by a simple substitution of weights. The needle may be readily clamped or released for special tests by means of a clutch. For periods of penetration other than five seconds, the push button on the right may be used and any desired time may be allowed for penetration, the period being controlled by the large minute dial at the top of the instrument. DESCRIPTION — The entire instrument is automatic and is operated by two ordinary dry cells. It is enclosed in a mahogany case with glass sash, lock and key. There is also a large drawer located in the base for keeping the testing pans, ther- mometer and other accessories. • ADVANTAGES — 1st, produces uniform penetration tests; 2nd, controls the duration of tests; 3rd, applies uniformity of penetration weights; 4th, eliminates vibra- tion during operation; 5th, insures absence of personal equation. Price, complete $100.00 1072a NEEDLES, A. S. T. M. Standard. Description: The needle for this test shall be of cylindrical steel rod, 50.8 mm. (2 inches) long and having a diameter of 1.016 mm. (.04 inch) and turned on one end to a sharp point, having a taper of 6.35 mm. (.25 inch). Price, each $1.00 LABORATORY SUPPLIES AND CHEMICALS 1073 1073 ASPHALT FLOW PLATE. Set consisting of two plates, each with six corrugations, and one mould $5.00 1074 1074 EXTRACTOR. New York Testing Laboratory. For the analysis of paving mixtures containing broken stone. These extractors are made entirely of metal. (Detail information and instruc- tions furnished upon request.) Complete extractor $35.00 1075 1075 RING AND BALL, for melting point test $1.00 NOTE: We are in position to furnish special apparatus for testing various grades of tar, ^ oils, etc. Send us your list of requirements for quotation. For Hydrometers, Thermometers, Metronomes and Stop-Watches used in connection with asphalt testing see under individual headings. 10 A. DA1GGER & COMPANY, CHICAGO, U. S. A. 1077 107(5 1078 1076 VISCOSIMETER, Engler's. Latest improved form with double walls. Gold plated inside, with platinum outlet. Furnished with a graduated flask, ring burner, and two fine thermometers $65.00 1077 VISCOSIMETER, ASPHALT. "New York Testing Laboratory Type." Consisting of an aluminum float, with three brass plugs, standardized • • 8.00 1078 CUBICAL BRASS MOULD. One-half inch, with brass plate, for melting . point apparatus 5.00 1€79 DRYING OVEN. "New York Testing Laboratory Type." For uniform tem- peratures. This oven has a fan mounted on ball bearings which can be revolved by any convenient power, thereby hastening the drying. The heat is gen- erated from a ten-inch rmg burner below the oven, the outside is covered with asbestos, made of Russian iron $25.00 1079a DRYING OVEN. Same as No. 1079, but made of copper 35.00 1080 BITUMEN HOLDER. Draper Type.. 3.00 1080 1081 1081 DULIN ROTAREX, de- signed for the determination of Mineral Aggregate in Bituminous pavements. A complete extraction can be made in five minutes, which would require two hours by the filtering methods. With a specially constructed elec- tric motor, which can be operated on either alternat- ing or direct current, 110 volts (unless 25 cycles or less), including 5 feet of lamp cord with plug for attaching to Edison lamp socket. Net. $70.00 (Descriptive circular upon application.) LABORATORY SUPPLIES AND CHEMICALS 11 1083 DULIN ROTAREX, as above, large size, with universal motor, capable of operating on either direct or alternating current. 110 volts, 60 cycles or on 220 volts direct current. Net : . . . $125.00 APPARATUS FOR WATER SAMPLING IN CREOSOTE OILS. 1084 SAMPLING OF CREOSOTE OIL IN TANK CARS AND STORAGE TANKS FOR MAKING WATER DETERMINATIONS "It is recommended as good practice that, in order to obtain accurate determinations as to the percentage of water contained in creosote oil in tank cars and in storage tanks, the principle of zone sampling be employed, and described in the 1916 report of your Committee (Proceedings, Vol. 17, pp. 447 to 456) and that for the purpose of obtaining zone samples an apparatus of the type illustrated in this report be used." From Bulletin of the American Railway Engineering Association, Vol. 18, No. 195, March, 1917. This apparatus consists of a brass cylinder with a pointed, perforated bottom. The holes in the bottom are closed by means of a spring valve, which can be opened by means of a wire extending along the extended stem attached to the cylinder. This stem is made in several sections, so that it can be used at any depth. The stein is calibrated in feet and inches, thus facilitating the zone sampling. The apparatus is as illustrated. Price $45.00 12 A. DA1GGER & COMPANY, CHICAGO, U. S. A. APPARATUS FOR TESTING COAL TAR AND REFINED TARS, OILS AND PITCHES DERIVED THEREFROM As adopted in the Standard Methods of the Barrett Manufacturing Company, New York. See Journal of Industrial and Engineering Chemistry, April, 1911, March, 1913, and May, 1914. The apparatus listed below is only the special apparatus re- quired for these tests. The regular apparatus, such as tripods, burners, clamps, etc., are to be found under their respective headings throughout the catalogue. Complete lists of both the special and regular stock apparatus required for the various tests will be sent upon request. 1085 1086 1087 1089 1091 1088 SPECIAL APPARATUS REQUIRED FOR WATER IN TAR TEST 1085 CONDENSER TROUGH, of copper, on supports, with wooden base $ 8.00 1086 CONDENSER TUBE, of glass to fit Condenser Trough No. 1085 30 1087 SEPARATORY FUNNEL, with stopcock, capacity, 120 c.c 3.00 1088 COPPER STILL, with steel clamps, inside dimensions, 6x3^ inches, with six paper gaskets 15.25 1088a COPPER STILL, Same as No. 1088, but larger size, i. e., inside dimen- sions, 7^x5 inches 19.50 1089 RING BURNER, brass, to fit small Still No. 1088 1.90 1089a RING BURNER, brass, to fit large Still No. lOSSa 3.25 1090 CONNECTING TUBE, of glass 25 SPECIAL APPARATUS REQUIRED FOR SPECIFIC GRAVITY TEST 1091 SPECIFIC GRAVITY BOTTLE, Barrett modification of the Hubbard form, 50 c.c. capacity $ 1.90 LABORATORY SUPPLIES AND CHEMICALS 13 1094 1095 1097 1092 1093 1096 SPECIAL APPARATUS REQUIRED FOR EVAPORATION TEST 1092 EVAPORATING DISH, of pure nickel, with flange and handle $1.90 SPECIAL APPARATUS REQUIRED FOR SLIDE TEST 1093 SLIDE BOX, of copper, with six corrugations $9.00 i SPECIAL APPARATUS REQUIRED FOR LIGHT OIL TEST 1094 HEMPEL DISTILLING TUBE $0.35 SPECIAL APPARATUS REQUIRED FOR MELTING POINT OF HARD PITCH TEST 1095 AIR MELTING POINT OVEN, of copper, with mica window, removable tray, etc $12.75 SPECIAL APPARATUS REQUIRED FOR MELTING POINT OF PITCH TEST 1096 PITCH MOULD, consisting of iron clamps with brass block $5.00 1096a THERMOMETER, for melting point, etched on stem, 0-80° C. in l/5ths... 4.50 1096b THERMOMETER, for melting point, etched on stem, 60-140° C. in l/5ths. . 4.50 SPECIAL APPARATUS REQUIRED FOR CONSISTENCY OF REFINED TARS AND SOFT PITCH TEST 1097 SCHUTTE PENETROMETER, with one plug $3.50 1097a PLUGS, only, for above Penetrometer, each 25 14 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1099c 1099b 1098 1099cl 1098 EXTRACTION APPARATUS, Barrett modification of the Cottle, or Underwriters' form. Complete with flask, cover, coil and basket of Ger- man silver wire ." , $4.25 1098a GLASS FLASKS, only, for above Extraction Apparatus 60 1098b WIRE BASKET, of German silver, only for above Extraction Apparatus. .'. .80 1098c COVER AND COIL, of block tin, only, for above Extraction Apparatus 3.00 SPECIAL APPARATUS REQUIRED FOR STANDARD CREOSOTE OIL DISTILLATION 1099 ASBESTOS SHEET, specially cut to fold into cover for retort $0.50 1099a THERMOMETER, graduated from 0 to 400° C. in 1°. Made specially for this test 5.00 1099b CONDENSER TUBE \'...'. 35 1099c RETORT, Resistance Glass, 250 c.c. capacity. Made to special dimensions and with neck set at special angle, otherwise similar to regular retorts which, however, are not suited for this work 1.45 SPECIAL APPARATUS REQUIRED FOR ADDITIONAL CREOSOTE OIL TESTS 1099d SEPARATORY FUNNEL, with ground glass stopper and stopcock, grad- uated to 100 c.c.; for heavy oils • • $2.50 BAKING OVENS. For Baking Ovens, see the Despatch Electric Oven LABORATORY SUPPLIES AND CHEMICALS 15 CHAINOMATIC BALANCES ANALYTICAL CHAINOMATIC BALANCE NO. 1101 With Vernier Capacity • • 200 grams Sensitiveness 1/20 milligram Diameter of Pans 2^ inches Length of Beam 7 inches Bearings Agate planes Knife edges • • Agate Capacity of bar and vernier . .50 Mgm. to 1/10 Mgm. It is the regular No. 1105 Becker Balance equipped with chain, and gives direct rapid reading without rider or small weights. Polished mahogany case, front sliding frame, counterpoised. Mounted on black plate glass. After all the necessary large weights up to 50 milligrams are placed on the pan, the weighing from 50 milligrams to 1/10 of a milligram can be concluded without opening the balance or using the arrest, eliminating the necessity of reading and re- placing all small weights or the handling of a rider with a consequent enormous saving of time. One end of the weighing chain is hung from an arm of the scale beam, and the other end from a slide-block which is moved up and down on a vertical graduated scale. As this block is raised, more of the weight of the chain is taken from the beam and hangs from the slide-block which forms a stationary support for holding the inactive part of the chain. As the slide is lowered a greater proportion of the weight of the chain is transferred to the beam. Price $175.00 NOTE: We have produced specially designed sets of weights for the Chainomatic Balances. For full details, see page 32. 16 A. DAIGGER & COMPANY, CHICAGO, U. S. A. We are also in position to furnish a less expensive Chainomatic Balance of follow- ing specifications: No. 1103 Analytical Balance with Vernier (see illustration below). Capacity \ 100 grams Sensitiveness • • 1/20 milligram Diameter of pans 3 inches Length of beam ; 6 inches Bearings ; Agate Knife edges • • .Agate Capacity of bar and vernier 50 Mgm. to 1/10 Mgm. It is the regular No. 1105 Becker Balance equipped wtih chain, and gives direct rapid reading without rider or small weights. Polished mahogany case, front sliding frame counterpoised. Mounted on black plate glass. Price $130.00 ANALYTICAL BALANCE NO. 1105 Capacity 100 grams Sensitiveness , 1/20 milligram Diameter of pans • • 3 inches Length of beam 6 inches Bearings ;..... Agate Knife edges Agate Aluminum beam graduated in 1/5 milligram with white graduations on black background. Independent arrest for pans with automatic stop. Width of pan support 4 in.; wider if specified. Polished mahogany and glass case, glass top, front sliding frame counterpoised. Dimensions of case: 16 J4 i°- long, 9 in. wide, 18^ in. high. 1105 Price $ 90.00 Price, mounted on black plate glass "..../ 100.00 LABORATORY SUPPLIES AND CHEMICALS 17 BALANCES ANALYTICAL We have listed herein, the most popular Balances of American makes, and can supply any Balance not listed, on short notice. 1107 1107 BALANCE ANALYTICAL, Troemners. This world-famous Balance meets the most exacting demands of the analytical chemist. Short 7-inch cold rolled aluminum beam with 50 divisions on each side. Sensibility to 1/20 milligram. Capacity 200 grams. Edges and planes of agate. Pans of aluminum. Arches of cold drawn nickel silver. Mahogany and glass case with black glass base. Pan release and arrest. All brass parts gold plated. Price, each $162.50 1109 BALANCE ANALYTICAL, BECKER. An American made Balance of high reputation, in widespread use. Capacity — 200 grams. Sensibility — 1-20 milligram. ' Case — Of polished mahogany and glass, with sliding frame coun- terpoised, mounted on black plate glass. Dimensions, 16J4 inches long, 9 inches wide, 18^ inches high. With specific grav- ity support and holder for weighing test tubes, with coun- terpoise. Beam — Graduated on both sides in 1-10 milligram, with white gradu- ations on black background. Length of beam, 7 inches. Knife Edges and Planes — Of agate throughout. Release and Arrest — Independent arrest for pans with automatic stop. Pans — 2fys inches in diameter. Pan supports 4 inches wide, or wider if specified. Price, as above described $135.00 Price, with adjustable shelf for supporting beaker when taking specific gravities. . 145.00 18 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1111 BALANCE ANALYTICAL. Capacity 200 grams, sensitive to 1/20 mgm. under full load. All metal parts heavily lacquered, pans 2l/2 inches diam- eter, black beam with 50 white graduations each side of zero. Dial has • red graduations so that black pointer is easily observed. All bearings of agate. Case of seasoned mahogany 17 inches long, 17l/> inches high by 0 inches deep . $100.00 1113 1113 BALANCE ANALYTICAL. Capacity 100 grams, sensibility 1/10 milli- gram. Beam 6 inches long of hand-rolled aluminum. Price, complete with one (1) pair 3-inch watch-glasses; three (3) five (o) milligram riders; wood bench for specific gravity weighings $85.00 Price, with metal parts heavily gold-plated 95.00 LABORATORY SUPPLIES AND CHEMICALS 19 1115 BALANCE ANALYTICAL. Capacity 100 grains, sensibility 1/10 milligram. Beam 6 inches long. This instrument is unquestionably the greatest Balance value for 100 gram capacity and 1/10 milligram sensibility on the market. Price $75.00 Balance No. 1115. All parts heavily gold plated. Price 85.00 111 1117 BALANCE, CELERITAS, ANALYTICAL. Designed to meet the needs of educational and commercial laboratories for an economical analytical balance. Beam, polished aluminum. Capacity 200 grams, sensibility 1/10 milligram. ^ice Price, mounted on black glass plate ................... $42.50 50.00 20 , A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1119 1119 BALANCE — Analytical School Laboratory Balance. Satisfactorily meets. the needs of Chemistry, Agriculture and Physics Laboratories requiring a well-built, high-grade balance of precision. Designed and made by an expert with over twenty years' actual experience in analytical balance making. Suitable for both teacher and student use. Guarantee — May be returned at our expense if after a fair trial it does not prove satisfactory. Sensibility — 1/10 of a milligram under full load of 100 grams in each pan. Capacity — 100 grams. Price - -$35.00 1121 1121 BALANCE — Portable Analytical. The beam of this balance is made of aluminum alloy, 4 inches long, with 50 divisions on each side of the center knife edge; the bearings are of Russian agate. Total weight &l/2 pounds. Balance complete with set of first quality weights from 10 grams to 1/10 milligram, and riders ...........,.,, $91.00 LABORATORY SUPPLIES AND CHEMICALS 21 ASSAY BALANCES In addition to the following assay balances, we can furnish any other special type known. For detailed information write to our Balance Department. 1123 1123 BALANCE ASSAY — Troemner's. ll/2 -inch beam, sensibility 1/100 gram. Beam is of special hard cold rolled aluminum. Fall-away pan and beam arrests. Full agate bearings. Aluminum pans with nickel silver hang- ers, black glass plate. Price $123.50 1125 1125 BALANCE PORTABLE ASSAY— Troemner's. The beam of this bal- ance is 4 inches long and divided into 50 parts on each side of the center knife edge, and fitted with an improved locking apparatus, making it unnecessary to remove the beam from the fulcrum during transportation. The balance is sensitive to 1/100 milligram; the bearings are of agate. The case is made of seasoned mahogany, and French polished glass. Size ll/2 inches long, 2^ inches deep, 8^ inches high. The carrying case is of walnut, fitted with lock and key and trunk strap handle. Size, 8l/2 inches long, 5 inches deep, 9J/2 inches high. T6tal weight of outfit 6^4 pounds. Price of complete balance with a set of first-quality adjusted plati- num weights from 1 gram to 1/10 milligram and riders $91.00 A. DAIGGER & COMPANY, CHICAGO, U. S. A. PULP BALANCES 1127-1129 1131-1137 Pulp Balances illustrated above are used for Prescriptions, Ore, Sugar, Pulp, Jewelry, etc. Constructed of the very best materials, steel knife edges, and agate bearings, removable pans mounted on French Polished Mahogany box, with leveling screws. Balances Nos. 1131-1137 furnished with leveling screws and level. Number Capacity Sensibility Diameter of pans Length of beam Price 1127 1129 1131 1133 1135 1137 2 oz or 75 grams 5 oz or 180 grams 10 oz or 300 grams 20 oz or 600 grams 50 oz or 1500 grams 100 oz or 3 kilo 1/50 grain or 1 mgm. 1/30 grain or 2 mgm. 1/10 grain or 5 mgm. 1/10 grain or 5 mgm. 1/5 grain or 10 mgm 1/3 grain or 20 mgm. 75 m. m. 80 m. m. 100 m. m. 125 m. m. 150 m. m. 180 m. m 150 m. m. 180 m. m. 230 m. m. 270 m. m. 300 m. m. 370 m. m. $13.00 17.00 25.00 •30.00 38.00 55.00 Number Capacity Sensibility Diameter of pans Length of beam Price 1139 1141 1143 1145 1147 1149 2 oz or 75 grams 3 oz or 180 grams 10 oz or 300 grams 20 oz or 600 grams 50 oz or 1500 grams 100 oz or 3 kilo 1/60 grain or 1 mgm. 1/60 grain or 1 mgm. 1/30 grain or 2 mgm. 1/10 grain or 5 mgm. 1/5 grain or 10 mgm. 1/3 grain or 20 mgm. 75 m. m. 80 m. m. 100 m. m. 125 m. m. 150 m. m, 180 m. m. 150 m. m. 180 m. m. 230 m. m. 270 m. m. 300 m. m. 370 m. m. $25.00 29.00 39.00 46.00 60.00 85.00 LABORATORY SUPPLIES AND CHEMICALS 1151 1153 1151 Pulp Balance Improved, illustrated above, used for Prescriptions, Sugar Ore, Pulp, etc., with steel knife edges nd planes, constructed to the best materials, removable pans, has support for arresting beam and also end support for stirrups, relieving knife edges from all contact when Balance is at rest. Mounted on French Polished Mahogany box, furnished with level and leveling screws. Capacity Sensibility Diameter of pans Length of beam Price 2 oz or 75 grams 1/60 grain or 1 mgm. 75 m. m. 150 m. m. $18.00 5 oz or 180 grams 1/60 grain or 1 mgm. 80 m. m. 180 m. m. 25.00 10 oz or 300 grams 1/30 grain or 2 mgm. 100 m. m. 230 m. m. 32.00 20 oz or 600 grams 1/30 grain or 2 mgm. 125 m. m. 270 m. m. 45.00 .~>0 oz. or 1500 grams 1/5 grain or 10 mgm. 150 m. m. 300 m. m. 58.00 1153 Pulp Balance Improved, illustrates No. 1151 Balance mounted in French Polished Mahogany and glass case with front sliding door counterpoised, Jevel and leveling screws. Capacity Sensibility Diameter of pans Length of beam Price • :2 oz or 75 grams 1/60 grain or 1 mgm. 75 m. m. 150 m. m. $30.00 5 oz or 180 grams 1/60 grain or 1 mgm. 80 m. m. 180 m. m. 35.00 10 oz or 300 grams 1/30 grain or 1 mgm. 100 m. m. 230 m. m. 49.00 20 oz or 600 grams 1/30 grain or 1 mgm. 125 m. m. 270 m. m. 61.00 50 oz or 1500 grams 1/5 grain or 10 mgm. 150 m. m. 300 m. m. 75.00 1155 Pulp Balance. Same Balances as above on box or in glass case, as de- sired, furnished with agate knife edges and planes, will cost net each extra, $6.00. 1155A Balance. Same balance as No. 1151 on box with marble top, agate knife edges and planes. Capacity 250 grams. Price $45.00 Capacity 500 grams. Price 65.00 We are admirably equipped for making repairs on any model of balance, either domestic or foreign. Estimates cheerfully given without obligation to the inquirer. 24 A. DAIGGER & COMPANY, CHICAGO, U. S. A. LABORATORY AND POCKET SCALES 1159 1157 1157 CELERITAS BAKERS' SCALE. So named as it was originally made for their use, being a small balance with large pans; length, 12 inches; width, 9 inches; height, 5 inches; pans 5 inches in diameter; beam grad- uated up to 5 grams and divided into 1/10 gram; a set of accurate brass weights in block, which is fastened to the front of the scale, are included; capacity, 210 grams to 1/10 gram. Price $13.00 1159 CELERITAS DISPENSING SCALE. With side beam and sliding weight, to weigh 4 ounces. Handsomely finished; has 3^-inch nickel-plated movable pans; a side beam in front of scale with a sliding weight; this, beam is divided into 120 divisions, each division representing one grain; an extra row of metric divisions is placed on bottom edge of beam, each representing one decigram. Platform or shelf is attached to base of scale, in which are fitted a set of solid brass Troy weights, 2 ounces and down. Sensible to J^ grain; capacity 4 ounces. Price $11.75 1161 1163 1161 EBONY BOX SCALE. In ebony box, gold lines; gilt dial; heavy nickel- plated pans; marble top. No i 0 1 2 Diam. of pans ins. 7 8 9 Capacity Ibs. 5 8 10 Price each $18.25 $21.00 $23.85 1163 BALANCE, HARVARD TRIP. With two 6-inch round porcelain plates and side beam for laboratory work; capacity, 1 kilogram to 1/10 gram. Price $7.50 LABORATORY SUPPLIES AND CHEMICALS 25 Size No. 1 2 . Diam. of Pans 9 in. . . . . 5*/2 in. 1165 BALANCE— Metric Solution Scales —Two sizes. An even balance scale for making rapidly reagent or any other kind of composite solutions. The scale has two movable Brass pans, and the weight rack is attached to the base of the scale, and in it are fitted the weights, which are made of solid brass. The scale is provided with a side beam in front, un- divided, and is used for balancing the bot- tles or containers. With this scale can be made the most accurate solutions. Sensi- bility, % gram. Capacity Price 5 kilos, to 1 gram $26.00 1 kilo, to 1 gram 21.00 CELERITAS SOLUTION SCALE 1167 CELERITAS SOLUTION SCALE. Capacity 20 kilos, (about 45 Ibs.) It will weigh liquids with accuracy. The scale is provided with two weighing beams and sliding poises. One of these is divided into 100 parts, each part representing one gram; the other beam is divided into 10 parts, each part representing 100 grams. A bar with a sliding poise is placed under the weighing beam, for the purpose of balancing the empty bottle or container, which is quickly done by sliding the poise along the bar until a correct balance is secured. Capacity, 20 kilos. Sensibility, 1 gram. Price $32.50 1167 1169 1171 1169 MINERS' POCKET SCALES. Made in three sizes, and strictly first class. They are put up in neat tin boxes, with oval ends, and enameled green with bronze stripes; entire scale is of brass, including deep brass pans, hung with brass chains; full set of accurate weights are included. Capacity , . . . oz. Price ..each $2.75 2 $3.25 4 $4.50 1171 ARMY PRESCRIPTION SCALE. On polished box; scale can be taken apart and packed away in drawer of box; all parts nickel-plated; including a set of weights from 2 drams to y? grain. Beam ins. 6 Each $5.00 7 $6.50 8 $8.00 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1173 1175 1173 PRESCRIPTION BALANCE, in cherry mahogany box with marble top and hinged cover; has S^-inch nickel pans; thoroughly reliable and substantial. Capacity, 1 oz. Sensibility, y\ gram $19.00 1175 ROBERVAHL BALANCE, for coarse weighing. Heavy brass pans. Capacity Ibs. 125 Diameter of pans .-ins. 5l/2 8 9 Each $8.50 $9.75 $11.75 1179 SPECIAL "FOUR-IN-ONE" SCALE This scale, designed and manufactured by us, satisfies a long-felt want in the grain trade, for a small, complete office scale for weighing samples for moisture test and for determining test weights per bushel, dockages, weights for mailing sam- ples, etc. This "Four-In-One" Agate Bearing Scale is the most complete, compact, accurate and adaptable scale made satisfying these many needs. It renders the following weights: Equipped with a specially designed brass scoop for a convenient pouring of grain in flasks for moisture test, or in envelopes for mailing. Strongly made, with no springs or steel bearings to rust or become inaccurate. Large readable figures on beams. Highly painted and decorated. Effectively used in connection with grain sieves described upon Pages 10 and 11. Quick breaking and guaranteed accurate. Will do the work of four ordinary scales designed especially to satisfy any one of the above needs and at the small price of one. Used by country shippers, receivers and grain men everywhere. Price $25.00 LABORATORY SUPPLIES AND CHEMICALS SPECIFIC GRAVITY BALANCES 1181 This balance is designed to give liquid densities only. It will do this to the fourth decimal place. With jar, riders, plummet, wood case, forceps and weights. This balance is American made, and manufactured to our order. 1181 —Price • • $25.00 1181A— Plummet only. Price 7.50 1181B— Set (8) Riders only. Price 3.50 1182 SPECIAL WESTPHAL SPECIFIC GRAVITY BALANCES. Agate knives and planes, in mahogany case with drawer, screw feet and level. Balance fastened in case without raising apparatus to a black plate glass base inside of case. Complete with plummet jar and riders. Price complete $60.00 1182 1181B RIDERS FOR WESTPHAL SPECIFIC GRAVITY BALANCES 15 Grams Brass Weight of rider 5 .5 .05 .005 Grams Hanging Weight Price . $0.35 .35 .55 .55 1.00 28 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1183 1183 TORSION GRAVITY BAL- ANCE. Sensitiveness, 2 milli- grams; sensitiveness, 1/32 grain. Recording beams, upper, .01 by .0001; lower, 1.40 to .70 by .01. Tare beam, bottle, 100 C. C; case, metal and ground glass. Ar- rest, measurements, 12^ by 6 by 9^4 inches. Price with one bot- tle $50.00 When ordering extra bottles give serial number of balance. This balance is used for the ready determination of specific gravity of liquids, the result being obtained di- rect from the reading of the beam without calculation or the use of loose weights. The range is from .7000 to 1.4000. CELERITAS TRIPLE BEAM BALANCE 1185 ,JI 1187 1185 BALANCE, SPECIFIC GRAVITY. Jolly Spiral Spring. Mirror Scale. This balance is a decided improvement over the general style of appa- ratus of this kind, being made of metal throughout and handsomely finished. It consists of an upright, 3 feet high, supported by a tripod base fitted with leveling screws. The stage, scale and hook are clamped to the upright, all three being adjustable separately. The improved mirror scale is graduated in millimeters. The pans are of aluminum suspended on very sensitive springs. Two springs, a high and low ten- sion, are included with each balance $25.00 Used for determining specific gravity of minerals, etc., and in laboratories of rubber factories. 1187 IMPROVED CELERITAS TRIPLE BEAM LABORATORY BALANCE. This balance is one of the most popular of our specialties. It has a capacity of 111 grams, a sensibility of 0.01 gram, and reads directly on the aluminum beam to 0.01 gram. The beam is engine divided and is tested and adjusted at each division. The two lower weights are sup- plied with spring clips to insure accurate setting. The weights do not interfere, and they are attached to the beam so that they cannot be lost. A milled head lifts the center knife edge from its bearing when not in use. The stand is neatly enameled and is supplied with a leveling screw, spirit level, and swinging support for specific gravity work. The pan is movable and its hanger has an extra hook for specific gravity $17.50 LABORATORY SUPPLIES AND CHEMICALS 29 BALANCE ACCESSORIES 1189 1191 1195 1195 (a) 119' --- 1199 1199 (a) 1201 1203 Number Price 1189 — Balance Covers — Of Rubber Sheeting, made to order, each $2.00 to $4.00 1191 — Weighing Tube Support — Nickel plated, for use in either vertical or horizontal position, each 2.00 1193 — Spirit Level — Circular, of brass, 1 inch diameter, each 4.00 1195 — Balance Rests — Of glass, for use under leveling-screws of balance, each •-. 15 1195 (a) — Balance Rests — Of glass with rubber cushion, for use under leveling- screws of balance, each 40 1197 — Balanced Watch-Glasses — Without handles, accurately adjusted for analytical work 1.00 Diameter, inches Zl/2 2^4 3 Per pair $1.00 $1.00 $1.00 1199 — Forceps — Brass, curved form, polished and lacquered, each 50 1199 (a) — Forceps — Brass, straight form, polished and lacquered or nickeled, each. . .50 1201 — Forceps — Brass, curved form, ivory tipped, polished and lacquered or nickeled, each 1.50 1203 — Forceps— With curved ivory tips, for handling small weights, each 1.50 1205 — Pans for Button Balances — German silver oxidized black, per pair 2.50 1207 — Magnifier — For index-plate, adjustable and portable, each 5.50 30 A. DAIGGER & COMPANY, CHICAGO, U. S. A. BRASS SCOOPS WITH TARE WEIGHT FOR BULLION BALANCES 1209 1211 1217 121'.) 1209 (a) 1209 (b) 1209 (c) 1209 (d) 1209 (e) —12 — 7 x 9 —10 —11 x!3 x!5 Price with foot .................................... ............. $10.00 with foot. . • • ............... ......... ..................... 10.50 with foot ................................................. 11.00 with foot ............ ................... , ................. 11.25 with foot ---- . .............................. - .............. 11.75 1209 (f) — 12.}/ptl6^" with foot ............. ................................... 13.00 Spun Brass Tare Ball for Counter Balancing Scoop ................... 2.60 1211 —With Long Spout 1211 (a)— With Short Spout Price .$4.25 : 4.25 ALUMINUM SCOOPS WITH TARE WEIGHTS Price 1213 — 10 grams capacity $2.50 1215 — 20 grams capacity 2.60 1217 — 30 grams capacity • • 2.95 1219 — Dish, Pure Nickel, deep form, with tare weight, each 4.25 1221 1221— SCALE PANS, with handles- Glass, 2^, 224, 3 in Per pair $0.75 Nickel, 2l/2, 2%, 3 in Per pair 1.50 Aluminum, 2l/2, 2%, 3 in Per pair 2.00 We do general Instrument repairing as well as Balance repair- ing and adjusting. Weights refinished and accurately adjusted. Our Balance Repairing Department includes the adjustment of the instrument and also the refinishing of all metal parts and cases. LABORATORY SUPPLIES AND CHEMICALS 31 WEIGHTS 1311 1315 1311 Weights adjusted to meet the requirements as set forth by the U. S. Bureau of Standards. The gram Weights are made of Tobin bronze. They are made of one piece heavily gold-plated. The fractions of the gram of Platinum. In mahogany, loose or hinged covered, velvet lined boxes, separate compartment. Each Weight fitted Grams 10 t two 20 one 20 50 100 200 500 1 kilo Milligrams Price 0 1 $40.00 1 . . . AS nn 1 ai 1 1 1 1 id three ric > a i ers • • 45 00 .... . 48 00 ... 52 00 60 00 .... ... 75 00 . 88.00 1313 WEIGHTS— GRAIN. (See above). Grains Price 10 to 1/100 grain $24.00 100 1/100 grain 40.00 1000 1/100 grain 52.00 1315 WEIGHTS OF PRECISION (First Quality) These Weights are adjusted accurately for general use, where weights of First Quality are desired. Gram weights are of brass screw-knob, polished and lacquered. The fractions of the gram are of Platinum from 500 mgm. to 50 mgm., and from 20 mgm. to 1 mgm. of aluminum. In mahogany, loose or hinged covered, velvet lined boxes. Each weight fitted in separate compartment. Price Grams Milligrams Price Gold-plated 5/10 to 1/10 $ 2.00 to 1/10 20.00 $21.50 1 and three riders 21.00 23.00 1 21.00 23.00 22.00 25.00 . - 24.00 28.00 30.00 37.00 36.00 44.00 two one 10 20 20 50 100 200 500 1 kilo 43.00 53.00 1317 WEIGHTS, GRAIN. (See above.) Grains 10 100 H)00 tu Price 1/1000 grain $20.00 1/1000 grain 21.00 1/100 grain with 3 riders . 23.00 32 A. DAIGGER & COMPANY, CHICAGO, U. S. A. SPECIAL SETS OF METRIC WEIGHTS FOR CHAINOMATIC BALANCES 1319 1319 WEIGHTS, METRIC. Adjusted to a tolerance of Class A, Bureau of Standards, double checked. All weights to 500 milligram are lacquered brass. All weights from 500 milligram to 20 milligram are of platinum. All weights from 20 milligram to 1/10 milligram are of aluminum. In polished mahogany boxes, lined with velvet, each piece fitted separately with glass cover on small weights. Furnished with forceps in sets from 20 grams. 10 grams to 50 milligram $21.00 20 grams to 50 milligram 22.00 50 grams to 50 milligram 23.00 100 grams to 50 milligram 25.00 200 grams to 50 milligram 27.00 1321 WEIGHTS, Separate. Brass weights, single, adjusted to meet requirements U. S. Bureau of Standards. One piece, gold plated, double checked. Grams 1000 500 200 100 50 20 10 5 2 1 . Price $10.50 8.75 7.60 7.00 4.10 3.80 2.60 2.40 2.20 2.00 1323 WEIGHTS, Separate. Brass weights, single, screw knob, first quality, gold plated, single checked. Grams 1000 500 200 100 50 20 10 5 21 Price $ 7.50 5.75 4.60 4.00 2.10 1.80 1.60 1.40 1.20 1.20 l323a WEIGHTS, Separate. Brass, lacquered. Price $ 6.00 4.25 3.10 2.50 1.60 1.20 1.10 1.00 .80 .80 1325 WEIGHTS, Brass, polished and lacquered. Set of two weights — 13.024 and 26.048. Price $4.00 Set of three weights— 13.024 and 26.048 and 52.096. Price 5.00 1327 WEIGHTS, Above weights brass, gold plated. 2 weights. Price • • $4.50 3 weights. Price , . . v . 5.50 LABORATORY SUPPLIES AND CHEMICALS 3.$ 1329 1331 1328 WEIGHTS, Assayton. Furnished in mahogany box as illustrated; of brass polished and lacquered. These weights are accurately adjusted to a standard of 29.1666 grams equals 1 Assayton. One A. T. contains as many milligrams as there are troy ounces in a ton (avoirdu- pois, 2000 pounds). Therefore, if one A. T. of ore assays one milligram the ton contains one troy ounce. Price 4 A. T. to 1/20 A. T $9.00 1 A. T. to 1/20 A. T 4.50 2 A. T. to 1/20 A. T 6.75 Containing 1 A. T., 1/2, 1/3, 1/4, 1/5, 1/10 and 1/20 A. T 6.00 1331 WEIGHTS, Second Grade. Gram Weights are of brass, two pieces, polished and lacquered, furnished in mahogany box with hinged cover, as per illustration. Fractions of the gram are of German silver and Aluminum. Grams Milligrams Price 1 to 1 $ 7.00 10 1 8.50 20 1 9.50 50 1 12.00 100 1 14.00 200 1 17.00 500 1 20.00 1 kilo. 1 27.00 1333 WEIGHTS, Factor. Brass polished a«d lacquered. Price, Net Carbon Factor, 2.7273 grams $1.30 Y2 Carbon Factor, 1.3636 grams 1.30 Y^ Silicon Factor, 1.1755 grams 1.30 Prosphorous Factor, 1.63 grams 1.30 1/10 Silicon Factor, 0.4702, Platinum 7.00 1335 Gram 1335 COMMERCIAL, Brass Polished and Lacquered. Troy Ounces 1 to Price 20 to 1 centigram $ 4.50 50 1 centigram 5.25 100 1 centigram 6.75 200 1 centigram 9.50 500 1 centigram 13.00 ">oo i milligram 14.50 J kilo 1 centigram 17.00 1 kilo " 1 milligram 18.50 two 2 5 10 20 50 100 200 500 Price grain $ 4.50 grain 7.50 grain 9.00 grain 12.00 grain 19.00 grain 26.00 grain 37.00 grain 55.00 grain 120.00 34 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1337 1337 WEIGHTS, Commercial. Third Grade. In block. Brass Weights Polished. Gram Price 20 to 1 centigram $ 2.00 50 1 centigram 2.50 100 1 centigram 3.00 200 1 centigram 4.00 500 1 centigram 6.00 500 1 milligram 7.50 1 kilo 1 centigram 10.00 1 kilo 1 milligram 11.50 Troy Ounces 1 to two 2 5 10 20 50 100 200 500 Price y\ grain $ 2.50 l/4 grain 3.50 Y± grain 4.25 Yt, grain 5.75 Y$ grain 10.00 Y* grain 17.50 Y± grain 27.00 1 grain 40.00 1 grain 80.00 1339 WEIGHTS, Avoirdupois, Iron. These weights are made of cast iron, with seal- ing hole on top of the weight. This hole is filled with lead as the adjusting medium. On this the sealer's stamp can be placed. Fur- nished in Japanned black, as follows: 1 Ib. to Yi oz $1.75 2 Ibs. to Yz oz 2.25 4 Ibs. to Yi. oz ; . 3.25 7 Ibs. to y2 oz., total 15 Ibs 5.75 10 Ibs. to y2 oz., total 20 Ibs . 8.50 1341 1341 WEIGHTS, Metric Iron. 1 kilogram to 10 grams, per set $ 3.25 2 kilogram to 10 grams, per set 4.25 5 kilogram to 10 grams, per set 8.25 10 kilogram to 10 grams, per set 13.00 Owing to the present regulation of platinum consumption by the Gov- ernment officials, we have discontinued the furnishing of platinum fractions almost entirely. In the place of fractional weights made of platinum we are now supplying these made of Gold, Rhotanium and other non-oxidizing metals. These weights have been tested very carefully and found to be ex- tremely accurate. We recommend them to be equal in every respect to the platinum fractional weights. LABORATORY SUPPLIES AND CHEMICALS 35 SINGLE WEIGHTS 1343 1343 WEIGHTS, Fractional, Single. First Quality. Platinum. Milligrams 1000 500 200 100 50 20 10 5 2 1 Dble. checked -4- or — .005 mgm. Price $10.00 $7.00 $4.00 $3.00 $2.00 $1.50 $1.00 $1.00 $1.00 $1.00 Single checked -f- or — .01 mgm. Price 8.00 4.50 3.00 2.00 1.50 1.00 .60 .60 .60 .60 1345 RIDERS. Either Form as illustrated, aluminum. 1.2 .6 Grain Riders Grain f ^ .5 .12 .10 .02 .01 Mgms. .12 653 Double checked — Price, $1.00 $1.00 $1.00 $1.00 $1.00 $1.00 $1.00 $1.00 $1.00 $1.00 $1.00 $1.00 $1.00 $1.00 Single checked — Price, .30 .30 .30 .30 .50 .50 .50 .50 .60" .60 .50 .50 .60 .60 1347 1345 1347 FRACTIONAL, Single. Second Quality German Silver and Aluminum. Milligrams 500 200 100 50 20 10 5 2 1 Price $0.55 $0.50 $0.45 $0.40 $0.40 $0.40 $0.25 $0.25 $0.25 1349 WEIGHTS, Single. Brass, Second Quality, Polished and Lacquered. Grams 1000 500 200 100 50 20 10 5 2 1 Price $5.00 $4.50 $2.50 $2.00 $1.25 $1.00 $0.70 $0.60 $0.55 $0.50 1351 1351 WEIGHTS, Fractional, Single. Third Quality Aluminum. Milligrams ..... ..... 500 200 100 50 20 10 5 2 1 Price ................. $0.40 $0.35 $0.30 $0.25 $0.25 $0.25 $0.20 $0.20 $0.20 1353 WEIGHTS, Single. Brass, Third Quality, Polished. Grams ................. 1000 500 200 100 50 20 10 5 2 1 Price ................... $4.25 $3.25 $2.00 $1.50 $1.00 $0.75 $0.50 $0.35 $0.30 $0.25 1355 WEIGHTS, Single Troy. Brass Price 500 oz ........... ........... $38.00 300 oz ...................... 25.00 200 oz ...................... 15.00 100 oz ...................... 9.50 50 oz ................. 6.50 Iron Price 500 oz ........................... $7.50 300 oz ................... .......... 4.50 200 oz ............................. 3.00 100 oz ..... ........................ 2.00 50 oz.... . 1.50 1357 1357 WEIGHTS, Set Pwt. 1 Pwt. down to .01. Price $3.5« 1359 1359 WEIGHTS, Set Wire Grain. Five grain down to l/2 grain. Price $1.50 36 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 140-; 1400 a. b. c. d. 1400 BALLOON, Glass, for weighing gases $0.75 1.50 3.00 2.50 See also Chancel's Bulb. 1402 BALLOON, Glass. Dumas', for determining the specific gravity of vapors. Capacity, c. c 30 50 100 150 Each $ -40 .50 .60 .75 1410 1420 1424 1431 143(3 1428 BAROMETER 1410 BAROMETER, Aneroid, brass case with 5-inch porcelain dial and curved thermometer $15.00 1420 BAROMETER, Bunsen's Siphon, graduated in millimeters, with support . . 12.00 1422 BAROMETER, Bunsen's Siphon, the graduated tube only, not filled 3.00 1424 BAROMETER, Oak Frame, plain front, oxidized scale divided to 1-10 inches, sliding metal pointer; with thermometer 15.00 U. S. Weather Bureau's Standard with vernier reading ^^^^ to 1-1000 inch, thermometer, etc 60.00 1430 BAROMETER, same, with both English and metric scales 67.50 1431 BAROMETER, same, with oak board, opal glass reflectors 72.50 1434 BAROMETER TUBE, Straight, 33 to 36 inches long, for Torricelli's ex- periment 35 1436 BAROMETER TUBE, Bent, with bulb 50 BAROMETER TUBING, see TUBING, Glass. BASKETS, see TEST TUBE, Baskets. LABORATORY SUPPLIES AND CHEMICALS 37 BATHS 1454 1450 1458 1454 BATH, Sand Bath, of sheet iron, shallow. Diameter, inches 3 Each $0.10 1456 BATH, Sand Bath, Iron, hemispherical, deep form. Diameter, inches 3 Each $0.20 1458 BATH, Sand Bath, or hot plate, an iron tray on four legs. Size, inches 6x8 8x10 10x12 Each .- $2.50 3.00 3.50 4 .12 4 .25 .15 5 .30 f> .20 6 .40 .30 .60 10 .50 10 .85 1460 146!: 1160 1462 1464 1464 BATH, Sand Bath, Ruedorff's, of wrought iron. Burner adjustable in height $10.00 BATH, Water Bath, heavy copper, tin lined, with concentric rings and cover, handles and steam escape. Diameter, inches 4 5 6 8 10 Price, each $1.25 1.50 2.00 3.00 5.75 BATH, Water Bath, heavy copper, tin lined, with Kekule's constant water level. Diameter, inches 4 5 6 8 10 Price, each $1.75 2.00 2.50 3.50 6.25 1466 1466 BATH, Water Bath, Wiley, pat. May 5, 1914. Heavy copper 25x14, J^-inch bath proper 2 inches deep. Devised to reduce time in getting up steam. Gas heated, with constant level regulator. Price, with rings $50.00 38 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1472 1476 Water Baths of polished copper, tinned inside, with concentric rings and cover, provided with stopcock and Kekule's water level regulator, with extra sheet iron bottom and supported by four detachable legs. 1472 BATH, Water Bath, size 23 by 13^ by 5 inches, seven openings; three of 6 inches diameter and four of 4 inches diameter, with rings and cover $25.00 1472(a) BATH, Water Bath, same, but arranged with coil to be heated by steam. . 30.00 1472(b) BATH, Water Bath, same, but electrically heated 57.50 1474 BATH, Water Bath, same as No. 1480, but size 28 by 14 by 5 inches, eight openings, 5 inches diameter, with rings and cover 30.00 1474(a) BATH, Water Bath, same, but with coil, to be heated with steam 35.00 1474(b) BATH, Water Bath, same, but electrically heated 65.00 1475 BATH, Water Bath, size 14 by 14 by 5 inches, four openings, 5 inches diameter, with rings and cover 20.00 1475(a) BATH, Water Bath, same, but arranged with coil to be heated by steam. . 25.00 1475(b) BATH, Water Bath, same, but electrically heated 55.00 1476 BATH, Water Bath, with test tube rack, as used by Dr. Blair in iron analysis, made of polished copper, not tinned, 7 inches diameter, for ten test tubes 6x^5 in. . . 3.75 1480 1488 1480 BATH, Water Bath, for eighteen 6x§^ inch dissolving tubes; made of heavy polished copper, tinned inside, with rack, size 6 inches diameter by 7 inches high $ 5.00 1488 BATH, Water Bath, Griffin, of copper, for hot nitration and evaporation, size 13 by 7 by 5 inches, tin-lined, with copper funnel, and one 5-inch hole with four concentric rings and cover. It is provided with a constant water level, an extra sheet iron bottom, and rests on four detachable legs 12.00 LABORATORY SUPPLIES AND CHEMICALS 39 1495 1496 1493 BATH, Water Bath, of polished copper, tin-lined. The body of this bath is made of one piece (seamless), with concentric rings and cover, steam escape and extra plate perforated for test tubes. Diameter 5 6 8 inches 457 rings Each $3.50 4.50 6.50 1495 BATH, Water Bath, same as No. 1493, but with tripod 9 inches high; three sizes. Diameter 5 6 8 inches Each ' $4.00 5.00 7.00 1496 BATH, Water Bath, funnel shape polished copper, tin-lined, with concentric copper rings, cover and constant water level, including tripod, 8 inches high, in two sizes. Diameter 6 8 inches 5 7 rings Each $3.75 5.00 O O O O- O O O O O 1498 1499 1498 BATH, Water Bath, large, round, made of heavy copper, tin-lined, on re- movable iron stand, has six openings, each 3 inches diameter, and one opening, 6 inches diameter, with concentric rings and cover, provided with stopcock and water level, size 16 inches diameter, 4 inches deep and 13 inches high, including stand $20.00 1499 BATH, Water Bath, Electrically heated, of polished copper, with two re- movable covers, the one cover with two 5-inch openings and con- centric rings, and the other with thirty-six %-inch holes for test tubes. Size 14J4 by 6J4 by 3 inches deep; iy2 inches high, including base. Provided with Automatic Cut-Out that cuts off current if Bath is allowed to run dry 40.00 Any size and style of Water Baths can be furnished on short notice. Estimates cheerfully given 40 A. DAIGGER & COMPANY, CHICAGO, U. S. A. BEAKERS 1531 PYREX BEAKERS The manufacturers of Pyrex Glass have developed a low expansion bOrosilicate glass possessing a combination of qualities which render it superior in many respects to any glass of similar type heretofore available. Composition The simple chemical composition of the glass is an advantage as regards possible contamination of liquids in contact with it. It contains no metals of the magnesia- lime-zinc group and no heavy metals. 1531 BEAKERS, Griffin Low Form, with or without spout, Pyrex Glass. Capacity, c. c.. 50 100 150 250 400 600 800 1000 1300 1500 2000 2500 3000-4000 List price, each, in broken package .$0.16 .17 .19 .23 .27 .33 .38 .54 .65 .73 .98 1.20 1.40 1.80 Number pieces in original package ..216 156 156 168 84 72 48 48 24 24 12 12 12 10 1533 BEAKERS, Berzelius or Usual Form, with or without spout, Pyrex Glass. « Capacity, c. c 100 150 200 300 400 500 600 800 1000 List price, each, in broken package $0.17 .19 .21 .25 .27 .29 .33 .38 .54 Number pieces in original package 156 120 168 144 60 60 48 48 36 NONSOL BEAKERS In accordance with the specifications of the U. S. Government Bureau of Stand- ards, the designation Milliliter (ml.), instead of Cubic Centimeter (c. c.), is used in list- ing the capacity of these Beakers and Flasks. 1535— BEAKERS, Griffin Low Form, with spout, Nonsol Glass. Capac., ml 30 60 90 120 150 180 250 300 350 500 600 700 1000 1400 2000 Each, net $0.13 .14 .15 .16 .17 .18 .19 .21 .23 .27 .30 .33 .50 .70 .91 Number pieces in original pack- age, doz... 12 12 13 30 24 24 12 12 12 12 12 6 6 3 3 1535 (a) BEAKERS. Tall Form, with or without spout. Nonsol Glass. Capacity, ml 30 60 90 120 180 250 300 350 500 70010001200 Each.net $0.13 .14 .15 .16 .18 .19 .21 .23 .27 .33 .50 .55 Number pieces in original pack- age, doz 12 12 12 30 24 12 12 12 12 6 6 3 l/nless otherwise stated beakers with lips supplied. It is advisable when ordering to fully describe articles as in above headings. LABORATORY SUPPLIES AND CHEMICALS 41 1538 1549 1537 BEAKER. Very heavy, tumbler shape, with lip. Capacity c.c 200 Each $0.15 Per dozen . .... 1.50 1538 1540 1542 BEAKER. Aluminum. Capacity c.c 125 250 500 1000 Each $0.75 1.00 1.50 2.50 BEAKER, Thin Copper, tin lined, Griffin's form with lip. Capacity, c.c 125 250 500 1000 Each $0.75 1.00 1.50 2.50 250 .15 1.50 2000 3.75 2000 3.75 BEAKER, Thin Copper, Nickel Plated both inside and out for sugar analysis. Capacity, c.c 125 250 500 1000 " 2000 Each $1.00 1.25 1.75 2.75 4.00 1543 BEAKERS, Porcelain Goer's, without lip, glazed inside and outside with excep- tion of outside bottom surface. Size number. 1 la Diameter rim, mm 62 66 Diameter body, mm 52 60 Height, mm 93 108 Capacity, c.c 165 125 340 580 700 2 3 3a 4 5 6 74 87 93 103 114 122 65 78 83 93 104 110 118 143 154 167 198 200 970 1500 1775 la 2 3 3a 4 5 6 66 74 87 93 103 114 122 60 65 78 83 93 104 110 108 118 143 154 167 198 209 Each $0.75 .90 1.00 1.20 1.50 1.80 2.50 4.00 1545 BEAKERS, Porcelain, Coon's, with lip, glazed inside and outside with the excep- tion of outside bottom surface. Size number 1 Diameter rim, mm 62 Diameter body, mm 52 Height, mm 93 Capacity, c.c 165 250 340 580 700 970 1500 1775 Each $0.85 1.00 1.10 1.35 1.65 2.00 2.75 4.25 1547 BEAKERS, Porcelain Dye Pot, glazed inside and outside to the heavy sup- porting rim. Without lip. Diameter rim, 120 mm; body, 108 rnm; height, 188 mm; capacity, 1500 c.c. Each $2.75 1549 BEAKERS, Fused Silica. Vitreosil beakers have been produced in response to a wide demand for an article capable of resisting higher temperatures than glass, and having the characteristic resistance to extreme tempera- ture changes possessed by the Vitreosil laboratory crucibles and basins. The beakers are made in the standard tall and low forms and are supplied with or without lips at the same price. Capacity in c.c 50 100 150 200 250 400 500 600 800 Price, each $0.90 1.00 1.10 1.20 1.45 1.70 1.95 2.20 2.65 42 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1552 1550 1550 — BELL GLASSES, Low form, with knob. Height, inches 1# VA &A 4 4^ Diam 3 4 5 6 7 Each $0.60 .75 1.00 1.30 1.55 1552 BELL GLASSES, Tall form, with knob. Height, inches 6 8 9 11 Dia., inches 3 4 5 6 Capacity pt. qt. y2 1 Each $0.75 1.00 1.25 1.50 1554 BELL GLASSES, Open top. Height, inches 6 8 9 Diam. inches 3 4 5 Capacity pt, qt. y2 Each $0.65 .90 1.35 5 8 1.75 14 1.75 11 6l/2 1 1.50 1554 8 10 11 10 12 16 2.60 3.25 5.00 15 15 18 7 sy2 10 2 35 gal. 2.00 4.25 6.55 15 15 18 7 Sl/2. 10 2 35 gal. 2.00 3.80 6.00 1556 1558a 1558b 1562 1556 1558 1559 1562 BELL GLASSES, Glass stopper, ground in. Height, inches 8 Dia., inches 4 Capacity qt. Each $1.00 9 5 X 1.45 With ground-in stopcock. Form a and b; BELL GLASSES. $2.50 extra. BELL GLASSES. Swelled form, with knob. Capacity pt. Base Dia., inches 3 Each ,, $0.75 1559 11 15 6 7 1 2 gal. 1.75 2.25 from $1.00 to qt. 4 1.00 5 1.25 BELL GLASSES. Open top, with tubulature on side. Height inside Diameter inside ^Each 1.55 2 3 5 gal. 7 8*/2 10 2.60 3.75 6.00 $2.50 11 7 3.50 LABORATORY SUPPLIES AND CHEMICALS 43 1570 to 1572 1574 to 1578 1570 1571 1572 1574 1576 1578 1580 1582 1584 1586 BLOWERS — Fletcher's Foot Blower, simple, compact, portable and powerful, giving a steady blast of air The step is low and is convenient for the operator whether standing or sitting. A rubber disk forms the air reser- voir and equalizes the air pressure. BLOWER. No. 9, diam. of reservoir, 7% inches $ 6.50 BLOWER. No. 9a, diam. of eservoir, 9 inches 8.50 BLOWER. No. 9b, diam. of reservoir, 11 inches 13.00 Same, mounted on legs, making the reservoir less liable to injury. BLOWER. No. 10, diam. of reservoir, 7% inches 7.50 No. lOa, diam. of reservoir, 9 inches 9.50 No. lOb, diam. of eservoir, 10 inches 15.00 Extra rubber disk for Nos. 9 or 10 75 Extra rubber disk for Nos. 9a or lOa 1.25 Extra rubber disk for 9b or lOb 1.75 Extra net for Nos. 9 or 10 50 Extra net for Nos. 9a or lOa 50 Extra net for Nos. 9b or lOb .75 BLOWER. BLOWER. BLOWER. BLOWER. BLOWER. BLOWER. 1586(a) BLOWER. 1586(b) BLOWER. 1588 1589 1590 1588 1589 1590 BLOWER, Hand. Composed of two pure gum rubber bulbs, one covered with net, for continuous blast $1.50 BLOWER. Rotary Compressor. A very small and convenient device for fur- nishing air pressure, operated by electric or other motor, requiring very little driving power. Made in three sizes. The small size will furnish sufficient air pressure for two or three Blast Burners and develops at 1,000 R. P. M. about 10 Ibs. pressure per square inch. The larger sizes give a greater volume of air and may be used in operating gas heated crucible furnaces, etc. Size No. 1 requires l/fa H. P., and sizes No. 2 and 3 require Yt H. P. motor. Size No i :: .3 Height, inches 3 4 5 Each .Net $7.50 12.50 15.00 BLOWER. Prof. Richard's water blast, direct connection is made with Prof. Richard's filter pump No. 3690, producing simultaneously, vacuum and blast. With one filter pump $9.00 44 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1591 1593 1591 BLOWERS, Crpwell's Positive Pressure Blower, Adapted to all purposes re- quiring air under pressure of from one to ten pounds per square inch, or for any degree of vacuum not exceeding twenty-four inches. The action is very simple but positive even at lowest speed. For well regulated delivery an air reservoir is recommended. DETAILS OF CROWELL TYPE A BLOWERS Free Air Capacity : v n 01 « " M ja V 6 fc U *si 3 u ||| +: a 3 IsaJ-s O^ ^ QJ pBl* P4*D g C y '53 IlL I • _ u CJS o .8« „ ** tn 3 £ Uo. Ue-tflW ££ c.*^ c/) ffi<^£ £5 ^(S S»So EM ^H*^ 1-A 20 6.9 600 /4 4x1 24 W 10 x 6% $ 20.00 2-A 45 13. 500 /4 4x1^ 34 K* 12l/2X &l/2 26.00 3-A 125 25.3 350 y2 6x2^ 90 i 22 x!4 40.00 4-A 280 40.5 250 i 9x3 170 lT/2" 28 x!7 50.00 5-A 460 53.2 200 ij4 10x3 225 2 " 34 x20 75.00 6-A 690 79.8 200 2 12x4 320 2 " 38 x20 100.00 8-A 1050 121.5 200 3l/2 14x6 575 2J^" 48 x22 150.00 10-A 1660 192. 200 5 18x6 770 3 " 54 x28 225.00 12-A 3390 392.3 200 7 20x6 1300 4 60 x31 | 390.00 1593 BLOWERS, Crowell's Rotary Compressor or Vacuum Pump, Type "D." The Crowell Type "D" Rotary Air Compressors are manufactured in nine standard sizes of from four to three hundred and ninety cubic feet free air per minute capacities and are designed for a working pressure of twenty-five pounds or less per square inch. When usec* as Vacuum Pumps, all sizes of this type will, under permissible atmospheric conditions, exhaust to a vacuum of from twenty-nine to thirty inches (mercury column). The action is simple, positive and durable with a continuous intake and delivery of the air. No valves, springs, gears or unbalanced parts are used or required in the construction. The pressure or degree of vacuum is not de- pendent upon high operating speeds and as no special foundation or great amount of floor space is required, the installation and onera- With Oil Box 1594 Without Oil Box LABORATORY SUPPLIES AND CHEMICALS tion is a comparatively simple matter. The Crowell system of lubrication as applied to all standard Type "D" sizes, is positive and automatically controlled by the air pressure or vacuum. The oil feed valves are adjustable to suit the grade of lubricant used, and can be closed entirely when necessary. Rotates in one direction only either for use as a Compressor or a Vacuum Pump, requiring no changes in the lubricating system which operates from the outlet or pressure side under either compression or vacuum. Connections should be made to the inlet or suction side for vacuum work and it is also advisable, when using as a compressor, to run a pipe from the inlet to such place where a clean supply of air is assured. The heads are provided with water jackets for cooling, when necessary. The flow of water is regulated by the valve which is fitted to the overflow or discharge pipe. "Crowell Rotaries" are also made in other types, special sizes, etc., for lower pressures or vacuums as well as for higher pressures up to 125 Ibs. to square inch, or practically absolute vacuums. Plain or automatically controlled motor driven outfits supplied in all types. DETAILS OF CROWELL TYPE "D" COMPRESSORS OR VACUUM PUMPS Free Air Capacity a ftj O> ^ D tfi x V <2'£ Q. jj ej H"C o M to^ D •°5 "01 = .23 . 3 o . i~ u r^ OT J.M V& nj V (d c S S rt C 2 -s c w S *3 4> tn •£* c C/l • — « •Sg fe « 1 •5-a|g 2^ 2£§, r! o tn uj « 0>T3 C^ C W * V u S &< 0 V .-W 2 v >"Z O.*j 3 *• a .— — u 'o p X Sj w «•« fe ^* Ui ZH rt *5 'H e ft U 0 •S""rt ^ •2 c .2 >< crt 3 oj UO. oiilw <3&<M> 6SM <^ft< OHH.O E£ JH 1-D 15 4.3 500 M 6x2 70 54* 13x18 $ 65.00 2-D 40 9.2 400 1 8x2 115 ^" 14x22 80.00 3-D 100 17. 300 2 12x4 250 i 19x34 108.00 4-D 280 40.5 250 4 14x4 425 1/2" 23x38 180.00 5-D 400 46. 200 5 18x6 580 2 26x44 204.00 6-D 600 69.4 200 6J/2 18x8 725 2 " 26x55 270.00 8-D 1000 115.7 200 9 20x8 1150 Zl/2" 30x64 390.00 10-D 1650 190.9 200 12 22x10 1675 3 " 36x70 600.00 12-D 3390 390. 200 20 24x10 2] 50 4 38x75 1000.00 1594 BLOWER AND VACUUM PUMP, Crowell, No. O. D. Designed for intermittent operation and principally for vacuum work, but can also be used for pressure. It is fitted in an oil immersion box, making it prac- tically leak-proof, and will exhaust to a vacuum of from 29 to 30 inches or a pressure up to 25 Ibs. to sq. inch. Capacity about 2 cu. ft. of free air per minute. Inlet and outlet tapped for J^-inch pipe size, and about J/4 H. P. is required to operate it. Speed, 600 R. P. M. Can be used with or without the oil box. Weight with oil box 50 Ibs. net; without oil box 20 Ibs. Floor space (in box) is 15x8 inches. List price (with oil box) $60.00 List price (without box) 47.00 1595-1 1595-1 BLOWERS, High Pressure Rotary Positive. AA A B C Size of pulley 2%xtyf\ 3x1 4x1^4 5x124 Cu. in. per rev. free air 11'.. 17 30 80 Cu. ft. per min. free air 4 6 iQi/2 i%y2 R. P. M 600 GOO 600~ 400 Prices $20.00 24.00 34.00 45 00 D E 7x2^ 12x2^ 200 35 300 67.00 400 r>s 250 82.00 G75 200 120.00 G 16x3^ 1400 162 200 195.00 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1595 1612 1613 1595 1696 1598 1602 1604 1605 1606 1608 1609 1610 1612 1613 BLOWERS, Muencke's, latest pattern, complete, with pump, for exhausting and compressing air for blast lamps, etc., all fittings are nickel-plated, size of chamber is 4 by 8 inches $15.00 BLOWERS, Same as above, but with vacuum gage attachment 22.50 BLOWERS, Hand Bellows. Diameter, inches 7 8 9 Each . $1.50 $2.00 $2.50 Anvil of best polished steel for blowpipe work, see No. 1042. BLOWPIPE, Black's, conical form, japanned tin, with tip $0.50 BLOWPIPE, Brass, Jeweler's form, 8 inch 25 BLOWPIPE, Brass, Jeweler's form, 10 inch 35 BLOWPIPE, Brass, Jeweler's form, 12 inch 50 BLOWPIPE, Brass, Jeweler's form with bulb, 8 inch 35 BLOWPIPE, Brass, Jeweler's form with bulb, 10 inch 45 BLOWPIPE, Brass, Jeweler's form with bulb, 12 inch 60 BLOWPIPE, Planner's, Brass, nickel plated with movable platinum tip and hard rubber mouthpiece 3.50 BLOWPIPE, Fletcher's New Patent, without blowpipe lamp, with both cold-blast and patent hot-blast, two jets and nickel-plated mouthpiece, in case ! 2.50 1614 1614 BLOWPIPE, Lamp, polished brass 1615 BLOWPIPE, Lamp, tin, for tallow. .$1.25 .50 LABORATORY SUPPLIES AND CHEMICALS 47 1616 1617 1618 1620 1622 1656 0 1618 1620 1622 1656 BLOWPIPE Mouthpieces, hard rubber, trumpet shaped $0.25 BLOWPIPE Tips, platinum, heavy, seamless At market price BLOWPIPE Carbon Block, moulded, 4 inches diam 50 BLOWPIPE Carbon Blocks, with holder 75 BLOWPIPE Carbon Cylinders, moulded 3xl>6 30 BLOWPIPE Mattrasses, glass, bulbed, per doz 75 1680 1680 BLOWPIPE FOR BRAZING, Etc., with two lever stop-cocks $3.50 1682 BLOWPIPE, Larger Sizes, each $4.50 to 6.00 See also BURNERS, BLAST-LAMPS. 1687 1690 1687 1688 1690 1692 1694 1696 1698 1700 1702 BLOWPIPE, Fletcher's Special Chemical Blowpipe with folding stand, adjustable to any height or angle, complete with hand blower lamp, and two jets $5.75 BLOWPIPE, Fletcher-Plattner No. 5C. Blowpipe Furnace, with Blast Bun- sen and Fletcher Furnace Support 5.25 BLOWPIPE, Fletcher-Plattner No. 5E. Blowpipe Furnace, with Blast Bun- sen and Lewis Furnace Support. 5.75 BLOWPIPE, Fletcher-Plattner No. 5. Blast Bunsen, alone 4.50 BLOWPIPE, Fletcher-Plattner No. 5D. Blowpipe Furnace, alone, with bottom or side hole, and one Crucible 35 FLETCHER FURNACE SUPPORT, alone 75 LEWIS FURNACE SUPPORT, alone, including Cap 1.25 CLAY CRUCIBLES, per doz 60 CLAY CAPSULES, per doz 60 BOOKS We are prepared to supply all scientific books at publishers' prices. A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1708 1712 1710 1714 1715 1708 BOATS, Combustion, Porcelain, glazed throughout with exception of outside bottom surface. Size number 012345678 Length, mm .' 58 60 60 62 76 76 88 97 100 Width, mm -. . 10 7 10 8 10 11 12 18 20 Height, mm 88 8 89 9 • 8 13 13 Each $0.22 .22 .22 .23 .24 .24 .25 .27 .28 1710 BOATS, of platinum. Length, inches '. ll/2 23-1 Appr. wt., grams 3.00 3.80 7.00 12.00 State size wanted when ordering. At market prices ruling on date of purchase. 1712 BOATS, Combustion, nickel, used in iron and steel analysis, size 3 inches by l/z inch. Each $1.00 1714 BOATS, Combustion, of Alundum, adapted to any kind of combustion work and largely used for the determination of carbon in iron and steel. No. 5733. 3^j in. long, l/2 in. wide, i% in. high. Each, net.. 30 No. 3729. 3^4 in. long, y% in. wide, $4 in. high. Each, net 35 No. 5358. 5 in. long, % in. wide, iV in. high. Each, net 40 No. 6016. 5*/2 in. long, l/2 in. wide, & in. high. Each, net 40 No. 7015. 4iV in. long, i9G in. wide, & in. high. Each, net 50 It is recommended that R. R. Alundum be used in connection with above boats, thereby protecting the boats and permitting of the repeated use of both. 1715 R. R. ALUNDUM. A very pure crystalline Alumina, supplied in Nos. 46, 60, 90 and 120 mesh grain. Price, ]/2 lb., net, 50c; 1 lb., net 85 1716 BOATS, Combustion, Johnson's, of vitrified clay, as used by C. M. John- son, for the determination of carbon in steel, ferro alloys and graphite. Five or more direct combustions of steel can be made with each boat, 120x15 mm. Each, $0.25. Per dozen 2.50 1717 BOATS, Combustion, Fused Silica Ware, glazed all over, without handles. Length, mm 44 76 76 102 152 Width, mm 13 13 16 16 12 Each $0,50 .75 .90 1.15 1.50 LABORATORY SUPPLIES AND CHEMICALS 49 1718 1719 1718 BOILERS, Agateware Double, with retinnecl cover which fits both vessels. Capacity of inside boiler, quarts 1 2 4 Each $1.25 1.50 2.75 1719 BOILERS, Agateware, with water bath. Capacity of inside vessel, pints 2 4 8 12 Each . $1.25 1.50 2.00 2.50 BOTTLES 1720 1724 1728 1730 1734 1736 1738 1740 1720 BOTTLES, Round, Narrow Mouth, for corks, Flint Glass. Capacity, ounces */2 1 2 4 6 8 12 Per dozen $0.25 .35 .45 .60 .75 .85 .95 1722 BOTTLES, Round, Narrow Mouth, for corks, green glass. Capacity, gallons l/2 1 Each . $0.20 .30 16 1.05 1724 1726 1728 1730 1734 1736 BOTTLES, BOTTLES, BOTTLES, BOTTLES, BOTTLES, BOTTLES, BOTTLES, Round Wide Mouth, flint glass. Capacity, ounces ....... l/2 1 Per dozen ............. $0.25 .35 .45 4 .60 6 .75 8 .85 12 .95 .70 16 1.05 32 1.80 3 1.00 32 1.80 Round, Wide Mouth, green glass. Capacity, gallons ............................. Yi 1 2 5 Each ......................................... $0.35 .50 1.00 1.50 Round, Wide Mouth, "Quinine" Bottles, flint glass. Capacity, ounces .................................. 2 3 5 Per dozen .......................................... $0.40 .50 1.00 Tinctures, Narrow Mouth, with "Mushroom" glass stopper, flint glass. Capacity, oz ...... 1 2 4 8 16 32 ^2 gal. 123 Per dozen ...... $1.20 1.30 1.50 1.90 3.00 3.75 8.75 13.75 30.00 45.00 Salt Mouth, Wide Mouth, with "Mushroom" glass stopper, flint glass. Capacity, oz ...... 1 2 4 8 16 32 ^ gal. 123 Per dozen ...... $1.30 1.45 1.65 2.10 3.30 4.15 9.75 15.00 33.00 50.00 Salt Mouth, flint glass, flat stoppered. Capacity, ounces ............ y2 1 2 4 8 16 32 Per dozen .................. $1.40 1.45 1.75 2.25 2.75 3.75 4.50 50 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1738 BOTTLES, Tinctures, narrow mouth, flint glass, Reagent Bottle Stoppers. Capacity, ounces ^ 1 2 4 8 16 32 Per dozen $1.20 1.20 1.70 2.00 2.50 3.50 4.50 1740 BOTTLES, Tinctures, narrow mouth, flint glass, flat glass stoppers. Capacity, ounces 1 2 4 8 16 32 Per dozen $1.45 1.70 2.00 2.50 3.50 4.80 1742 BOTTLES, Tinctures, of brown glass, mushroom stoppers. Capacity, ounces 1 2 - 4 8 16 32 Per dozen $1.45 1.70 2.00 2.50 3.50 4.80 1744 BOTTLES, Salt Mouth, brown glass, mushroom stoppered. Capacity, ounces ' 1 2 4 8 16 32 Per dozen $1.60 1.90 2.25 2.75 3-85 5.50 REAGENT BOTTLES With Ground Glass Labels. The labels are raised letters blown in the glass, the surface of each letter being ground to render it distinct. The letter- ing is indestructible, and is not defaced when the bottle is washed. The glass contains no lead, zinc or other metallic flux. The shape, thin dropping lip, and perfect stoppering are unequaled. The nam.es and symbols are exactly as given in the list. Included in our list of 4 oz. and 1 oz. Reagent Bottles will be found the names of all the Test Solutions referred to in the U. S. Pharmacopoeia. 1762 1750 No. One-fourth Pint Reagent Bottles, y8 Liter. Height, 5% inches. Hydrogen Sulphide (Amber ) HaS 2. Hydrochloric Acid HC1 3. Acetic Acid HC2HaOa 4. Sulphuric Acid H,SO4 5. Nitric Acid HNO3 6. Potassium Ferrocyanide K4Fe(CN)a 7. Potassium Sulphocyanide KCNS 8. Potassium Carbonate K2CO3 9. Potassium Sulphate K^SC^ 10. Potassium Iodide KI n. Potassium Ferricyanide K3Fe(CN';fc 12. Potassium Hydroxide ...KOH 13. Potassium Bichromate K2CraO7 14. Sodium Phosphate NasHPO4 15. Ammonium Hydroxide . . . .' N H4OH 16. Ammonium Sulphide (Amber) (NH4)SS 17. Ammonium Chloride . NH4C1 18. Ammonium Carbonate (NH4)3CO3 19. Ammonium Oxalate (NH4)3C2O4 1750a Ho. 20. Barium Chloride ...Bad., 21. Calcium Chloride CaCl, 22. Calcium Sulphate CaSO4 23. Calcium Hydroxide.. Ca(OH), 24. Magnesium Sulphate MgS04 25. Mercuric Chloride HgCl, 26. Silver Nitrate (Amber) A{;NO3 27. Lead Acelite Fb(C2H3Uj), 28. Ferrous Sulphate FeSO4 29. Ferric Chloride V'esCl« 30. Alcohol C,H5O-rf 31. Ammonium Sulphocyanide NH4CNS 32. Barium Hydroxide... Ba(OH),. 33. Barium Carbonate BaCO3 35. Ether (C2HS)2O 36. Cupric Sulphate CuSO« 38, 39i 40, Blank. 59. Sodium Carbonate Na2CO, 5i. Sodium Hydroxide NaOH The above 40 Bottles (3 blanks) are sold in a set. Price, $7.50 per set, boxed. 1750b The above set filled with C. P. Reagents. Price, $15.00 per set, net. LABORATORY SUPPLIES AND CHEMICALS 51 1750 (continued) No. 37 Platinic Chloride PtCl« No. 97. Ammonium Sulphydrate • 100. Mercuric Potassium Iodide. 401. Barium Nitrate NH4HS Ba(N03)2 CHC13 I + KI CH3OH Na2S2Os . .$1.75 58. Fehling's Solution. 404. Silver Sulphate 61 Sodium Hydroxide NaOH 406. Bromine Water. 407. Chloroform 81 Stannous Chloride SnCl2 408. Cochineal. 409. Coraline. 410. Litmus. 411. Methyl-Orange. 412. - Phenolphthalein. 413. Turmeric. 414. Iodine Solution 82 Ammonium Molybdate (NH4)2MoO4 83 Carbon Disulphide ... . . CS2 86 Mercurous Nitrate Hg2(NO3)2 87. Indigo Solution. 88. Nessler's Solution. 90. Magnesia Mixture. 93 Oxalic Acid H2C2O4 415. Methyl Alcohol 94 Picric Acid C9H2OH(NO2)3 416. Sodium Cobaltic Nitrite. 417. Sodium Hvoosulohite . 96 Potassium Chromate K«CrO4 Per dozen . 1752 Half Pint Reagent Bottles, ] No. 101 Sulphuric Acid Con . H2SO4 4 Liter. Height, 6l/2 inches. No. 114, Barium Chloride BaCl, (NH4)2S S2H5OH Na2HPO4 HC2HsO2 AgNO3 KOH Ca(OH)2 Pb(C2H3O2)2 $225 102 Sulphuric Acid, Dil H2SC>4 116. Blank. 122. Ammonium Sulphide (Amber) 126 Alcohol ... 103 Nitric Acid Con HNO3 104 Nitric Acid Dil HNOs 105 Hydrochloric Acid Con.. . .HCl 129. Sodium Phosphate 106 Hvdrochloric Acid, Dil HCl 130. Ammonium Oxalate 107. Hydrogen Sulphide ( Amber).. H2S 1 31. Acetic Acid 145. Silver Nitrate (Amber) 150. Potassium Hydroxide 151. Calcium Hydroxide 111 Sodium Hydroxide NaOH 152. Lead Acetate 112 Sodium Carbonate Na2CO3 Per dozen 1754 Pint Reagent Bottles, y?. Lite No. 237 Acetic Acid HC2H3O2 r. Height, 7^ inches. No. 222. Hydrochloric Acid, Con HCl HCl Na2HPO4 HN03 HNOs HNOs K2CrO4 KOH NaOH NaOH + Aq 231. Hydrochloric Acid, Dil 226. Hydrodisodic Phosphate . . . 216. Nitric Acid 227. Ammonium Hydroxide, Dil.. . NH4OH+Aq 229 Ammonium Sulphide Dil (NH4)2S~|-Aq 219. Nitric Acid, Con 232. Nitric Acid, Dil 236. Ammonium Sulphide ( Amber). (NH4)2S 238. Potassium Chromate 221. Potassium Hydroxide °23 Calcium Hydroxide ..Ca(OH)2 233. Sodium Hydroxide •'25 Calcium Sulphate CaSO4 228. Sodium Hydroxide, Dil 230 Ether (C2H5)2O 215. Sulphuric Acid 224 Ferrous Sulphate FeSO4 220. Sulphuric Acid, Con 217 Hvdrochloric Acid HCl 211. Blank. Per dozen 1756 Quart Reagent Bottles, 1 Liter. Height, 9l/2 inches No. No. 501 Sulphuric Acid Con .. ..H2SO4 505. Hvdrochloric Acid. Con HC! HCl $400 502 Sulphuric Acid Dil H2SO4 506. Hydrochloric Acid, Dil.... 503 Nitric Acid, Con HNO3 511. Blank. 504 Nitric Acid Dil HNO3 Per dozen 1758 1 Oz. Reagent Bottles. Height, 3^ inches. No. No. 325. Silver Nitrate (Amber) AgNO3 33fi. Gold Clilnrirlp AuCl3 $1 25 326 Cobaltous Nitrate Co(NO3)-> 341. Blank. 327 Platinic Chloride PtCl4 Per dozen 1760 1 Oz. Wide Mouth Reagent No. 350. . Sodium Carbonate Na2Co3 Bottles. Height, 3J/6 inches. No. 367. Potassium Chlorate KC1O3 .K3Fe(CN)a NaHCUHjO- 351 Borax . . . Na2B4O7 368. Potassium Ferricyanide .... 369. Sodium Bitartrate 353 Sodium Acetate NaC2H3Oa 354 Potassium Nitrate KNO8 370. Sodium Nitrate NaNOs 358. Potassium Cyanide KCN 371. Starch . 372. Test Paoer. 361. Am. Sod. Phosphate NaNH4HPO4 52 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1760 (continued) No. 364. Copper Cu 365. Ferrous Sulphate FeSO4 366. Ferrous Sulphide FeS No. 373 Zinc. 374. Ammonium Phosphate (NII4)oHPO 375. Blank. Per dozen $1.35 4 Oz. Wide Mouth Reagent Bottles. Height, 4^ inches. 1762 No. 301. Sodium Carbonate Na2CO3 302. Potassium Nitrate KNO3 303. Potassium Cyanide KCN 304. Borax Na2B4O 1764 No. 305. Ferrous Sulphate FeSO, 307. Blank. 312. Test Paper. 313. Sodium Ammonium Hydrogen Phosphate Na(NH4) Per dozen $2.00 Any names not on the list can be engraved on the Bottles. Extra, per dozen .$1.25 1766 BOTTLES FOR SPECIAL PURPOSES Loose Glass Caps for covering the necks and lips of Reagent Bottles (see cut) can be furnished at $1.25 per dozen^ extra, to fit the J4 pints, Yz pints, pints or quarts. See No. 1872. 1766 1773 1774 1776 1770 BOTTLES, Acid or Coin Test, with ground in dropper. Capacity, oz .................................... 1 Price, each ..................................... $0.40 .50 .60 1773 BOTTLES, Aspirator, of heavy glass, with tubulature at bottom drawn out for attaching rubber tubing. Capacity, cc ...................... 125 250 500 1000 2000 4000 Each ............................ $0.75 1.00 1.25 1.75 2.50 5.50 1774 BOTTLES, Aspirator, of best heavy glass, with tubulature at bottom and a large smooth mouth for cork stopper. Capacity ....... pt. % % 1 2 gal j^ 1 2 3 5 Each .......... $0.75 1.00 1.25 1.75 2.00 3.25 6.00 9.00 15.00 1776 BOTTLES, Aspirator, with glass stop-cock ground in the outlet. Capacity, gallon ................................. % i 2 Each ........................................... $6.00 8.00 12.00 1778 (a) 1783 1786 1787 LABORATORY SUPPLIES AND CHEMICALS 53 1788-1790 1792 1794 179G 1800 1778a BOTTLES, Balsam, for microscopical work, with ground glass cap and glass rod, \l/2 ounce, each $0.35 1783 BOTTLES, Dropping, TK patent, with stopper arranged to deliver contents drop by drop or hermetically seal the bottle..^, $0.25; 1, .35; 2 oz 50 1784 BOTTLES, Dropping, ground in pipettes with rubber bulb, */2 or 1 oz 50 1786 BOTTLES, Dropping, grooved stopper, l/2, 1 or 2 oz 50 1787 BOTTLES, Dropping, square, with Barnes' rubber pipette stopper, capacity 1 ounce 20 1788 BOTTLES, Dropping, Schuster's, each 30 1790 BOTTLES, Dropping, Schuster's, with stopper, each 50 1792 BOTTLES, Graduated, with glass stopper, for mixing. Capacity, c.c 250 500 1000 Each *. . $3.00 5.00 6.00 1794 BOTTLES, Homeopathic Vials, long or short. Capacity drams % 1A */2 1 2 3 4 6 8 Per gross $1.25 1.25 1.25 1.50 1.75 2.25 3.25 4.50 5.50 1796 BOTTLES, Oil Sample, long form. Capacity, ounces 1 2 4 8 Per dozen $0.75 1.10 1.50 2.25 1797 BOTTLES, Oil Sample, long form, as above, but with polished bottom, capacity 4 ounces, per dozen $2.50 1800 BOTTLES, Round, Screw Neck Tube Vials, flint glass, with nickel-plated caps. Capacity, drachms 1 2 3 4 Per dozen $0.40 .50 .75 1.00 1806 1810 1812 1802 BOTTLES, Round, Screw Neck Tube Vials, flint glass, with nickel-plated caps. Per dozen $1.00 1804 BOTTLES, Specific Gravity, unadjusted, perforated stopper. Capacity, c.c 10 25 Each $0.50 .60 1806 BOTTLES, Specific Gravity, accurately adjusted, perforated stopper Capacity, c.c 10 25 Each $1.00 1.50 1810 BOTTLES, Specific Gravity, very light, with ground-in thermometer. Capacity, c.c. 10 25 50 Each $3.50 4.50 5.50 1.25 50 .80 50 2.00 100 1.25 100 2.50 100 7.50 54 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1816 1818 1819 1821 1823 1812 50 1.25 BOTTLES, Specific Gravity, new style, with thermometer ground in central neck and a capillary stopper ground in side neck. 'Capacity, c.c 10 25 50 100 Each $4.00 5.00 6.25 7.50 1816 BOTTLES, Specific Gravity, Ostwald's Sprengel, each $1.00 1818 BOTTLES, 'Specific Gravity, Regnault's, with narrow mouth for liquids. Capacity, c.c 25 Each $1.00 1819 BOTTLES, Specific Gravity, Boot's, double wall with vacuum, with perforated stopper and cap. Especially useful in taking the specific gravity of liquids which are easily affected by temperature. Capacity, c.c 25 50 100 Each $5.00 6.00 7.50 1821 BOTTLES, Specific Gravity, Hubbard's, especially useful for semi-solid bitumens, dense oils, etc., consists of a fairly heavy straight tube with a ground in solid stopper, with a 1.6 mm opening through it instead of the usual capillary bore, capacity about 24cc, each $1.50 1822 BOTTLES, Specific Gravity, Schumann's, for cement, each 5.00 1823 BOTTLES, Specific Gravity, LeChatelier's, for cement 5.00 1823(a) BOTTLES, Specific Gravity, LeChatelier's, as above, U. S. Bureau of Standards design 7.50 1824 1826 1827 1828 1824 BOTTLES, Specific Gravity, Hogarth's, for determining specific gravity of iron ores in iron analysis. See Blair's analysis, page 279 seventh edition $3.00 1826 BOTTLES, Specific Gravity, Squibb's. Capacity, c.c 25 50 100 Each $3.50 5.00 6.00 1827 BOTTLES, Specific Gravity, Sprengel's, with ground on suction tube $1.50 1828 BOTTLES, Specific Gravity, Sprengel's, with normal thermometer and ground on suction tube , 7.50 LABORATORY SUPPLIES AND CHEMICALS 55 1829 1829(a) 1830 1830(a) 1831 1831(a) 1829 BOTTLES, Specific Gravity, Geissler's new style, with ground in thermometer, graduated in Y-,0 C and ground in capillary tube, with ground on cap. Capacity, c.c 10 25 50 100 Each $4.00 5.00 6.25 7.50 1829(a) BOTTLES, Specific Gravity, Leach's style, with ground in thermometer, graduated in y=,° C, side tube with ground on cap with fine perfora- tion. Capacity, c.c 10 25 50 Each $6.00 6.50 7.50 1830 BOTTLES, Specific Gravity, Regnault's, for solids, with ground in neck and stopper. Capacity, c.c 25 50 Each , $1.25 1.50 1830(a) BOTTLES, Specific Gravity, Regnault's, for liquids, with ground in stopper. Capacity, c.c 25 50 Each $1.25 1.50 1831 BOTTLES, Specific Gravity, Walker's, for very fluid liquids, capacity about 20 c.c. $3.50 1831(a) BOTTLES, Specific Gravity, American shape, for liquids or solids. 7.50 1832 1834 1836 1838 1832 BOTTLES, Washing, fitted with rubber stopper and movable exit tube. Capacity, ounces 4 8 12 16 24 32 64 Each $0.50 .75 .90 1.00 1.25 1.50 2.00 1834 BOTTLES, Washing, with tubes ground in neck. Capacity, ounces 4 8 16 32 Each $1.70 2.25 2.75 3.50 1836 BOTTLES, Washing, with ground-in stopper, and with stopcock in each tube, for volatile liquids. Capacity, ounces 8 16 32 Each ;. $3.50 4.00 - 5.00 1838 BOTTLES, Washing, with safety mouthpiece to prevent saliva from entering. Capacity, ounces 8 16 32 Each $2.00 2.25 . 3.00 56 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1841 1841(a) 1840 BOTTLES, Washing, with rubber bulb and valve, giving a constant flow, each , $1.50 1841 BOTTLES, Washing, for hot water, with wicker covered neck, fitted with rubber stopper and movable exit tube. Capacity, ounces 16 24 32 Each $1.00 1.25 1.50 1841 (a) BOTTLES, Washing, most perfect wash bottle designed, fitted with Griffin's tube. Capacity, ounces 8 16 24 32 Each $1.00 1.25 1.50 2.00 1842 1844 1846 184 1842 BOTTLES for Washing Gases, Allihn's, double acting. Capacity, c.c 250 500 Each $3.00 4.25 1844 BOTTLES for Washing Gases, Bunsen's. Size, c.c 125 250 500 Each :. $0.75 1.00 1.25 1846 BOTTLES for Washing Gases, Drexel's. Capacity, c.c , . 125 250 500 Each $1.50 2.00 2.50 1847 BOTTLES for Washing Gases, Drexel's, as above, low form. Capacity, c.c 125 250 500 Each $1.50 2.00 2.50 1848 BOTTLES for Washing Gases, Haberraann's, with ground-in tube, capacity, about 250 c.c $2.00 1849 BOTTLES for Washing Gases, Muencke's, with ground-in stopper, capacity, about 250 c.c $2.75 GLASSBLOWING A SPECIALTY We are in a position to supply special apparatus according to sketch. Repair work promptly done. 57 1849(a) 1849(b) 1849(c) 1849(a) BOTTLES, Gas Washing Bottles, Cloez's. Capacity ounces 8 16 Price each $1.25 1.50 1849(b) BOTTLES, Gas Washing Bottle, Sillman's, with wide neck, fitted with rubber stopper. Height, body, inches 7 8 10 Diameter, body, inches 1$4 2J4 2^ Each $1.00 1.25 1.50 1849(c) BOTTLES, Pressure, with porcelain stopper and rubber washer.. Capacity, 12 ounces. 1850 1857 1858 1859 1862 with flat bottom and ground-in 1850 BOTTLES, Weighing (Weighing Tubes), stopper. Height, mm ......................... 50 80 90 100 Diameter, mm ...................... 15 15 18 25 Each ................. . .............. $0.40 .50 .60 .80 1856 BOTTLES, Weighing, with ground-in stoppers, flat bottom, without neck. Height, mm ...... 40 50 50 60 70 60 80 Diameter, mm ____ 25 30 40 30 35 50 40 Each .......... ,...$0.60 .70 .80 .90 1.00 1.25 1.00 1857 BOTTLES, Weighing, extra wide, with ground-in stoppers. Height, mm ..................................... 30 30 Diameter, mm .................................. 50 60 Each ................ ........................... $1.50 2.00 Weighing, conical form, glass stoppered. Capacity, about c.c ............................... 15 30 Each ........................ . ................... $0.60 .80 1858 BOTTLES, 1859 BOTTLES, 150 25 .90 115 42 .50 30 70 .00 60 .00 Weighing, extensively used for Coal Analysis, with cover ground airtight on outside of shell. Diameter of body 25 mm. Height of body 20 mm ............................................. $0 . 50 Weighing, Grethen's, for weighing corrosive liquids, capacity 1J4 to 2 c.c .................................................. 3.00 1860 BOTTLES, 1862 BOTTLES, Weighing, Lunge's, for weighing corrosive liquids 4.50 58 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1866 1868 1870 1866 BOTTLES, Woulff's, two necks. Capacity, pints J4 V* 1 2 gal. Y* 1 Each $0.90 1.00 1.25 1.75 2.75 5.00 1868 BOTTLES, Woulff's, three necks. Capacity, pints J4 V* 1 2 gal- Vz 1 Each $1.25 1.50 1.75 2.25 3.25 5.50 1870 BOTTLES, Woulff's, three necks, with delivery tubes and stopper ground in the necks. Capacity, ounces 4 8 16 32 Each $3.00 3.50 4.00 5.50 1871a 1872 1871(a) BOTTLES, Woulff's, two neck and tubulature near bottom. Capacity .................... ........ 1 pt. 1 qt. Each ................................ $2.50 3.25 J^ gal. 1 gal. 4.75 5.75 1871b(b) BOTTLES, Woulff's, with 3 necks, and tubulature near bottom. Capacity ............................ 1 pt. 1 qt. ^ gal. 1 gal. Each ................................ $2.75 3.50 5.00 6.00 1872 BOTTLES, Caps, for keeping dust from necks of bottles. Size, inside, inches ............ 1^x2^ 1^x2*4 1^x2^4 2x2^ -Per dozen ................... $1.00 1.00 1.00 1.00 1879 1880 1882 1879 BOTTLE REST, made of hard rubber $0.50 1880 BOXES, Cardboard, oblong, covered with assorted tints glazed paper, */* gross in package. Size, inches 2^xl^x^ 3^x2^x1^ Per dozen $0.75 1.00 1882 BOXES, Cardboard, oblong, sliding, covered with fine glazed paper, assorted colors, J4 gross in package. Size, inches 2^xl^x?4 3^x2^x1^ 3 Per dozen $0.50 .75 1.00 LABORATORY SUPPLIES AND CHEMICALS 59 1884 1886 1888 1890 1892 1884 BOXES, Glass, with nickel plated screw cap. Capacity, ounces '. ^ 1 2 4 8 Per dozen $0.75 1.00 1.25 2.00 3.00 1886 BOXES, Glass, with glass cover. Capacity, ounces YI 1 2 4 Per dozen $0.75 1.00 1.50 2.00 1888 BOXES, Glass, Opal glass, oblong. Capacity, ounces, ^, per dozen $2.00 1888 BOXES, Tin, seamless, round. Capacity, ounces J4 /^ 1 2 4 Per gross $1.50 2.00 3.00 4.00 5.00 1892 BOXES, Wood, turned wood, % gross in package. Capacity, ounces y$ Vz 1 2 3 4 Per gross $0.75 1.00 1.50 2.00 2.50 3.50 BRIQUETTE MOULDS, See Cement testing apparatus. BRUSHES 0 1900 190$ 1906 1908 1910 1912 1900 BRUSHES, Assay, for lead buttons, Freiberg patterns, bristles firmly set. Each ' „ $1.00 1902 BRUSHES, for Beakers, with wood handle, each , 25 1904 BRUSHES, Bristle, flat, for paste, etc. Width, inches 1 \y2 2 Each $0.20 .35 .50 1906 BRUSHES, Bristle, flat, for buck board cleaning. Width, inches 3 4 5 Each $0.50 .75 1.00 1908 BRUSHES, Bristle, round, for marking, etc. Width, inches , 1 2 3 Each $0.25 .50 .75 1910 BRUSHES, for Burettes and long tubes, each $0.25 1912 BRUSHES, Camel's Hair (Pencils). Size Small Med. Large Per dozen ..$0.30 .40 .50 GO A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1924 1913 1914 1925 1913 1914 1916 1918 1920 1924 BRUSHES, BRUSHES, BRUSHES, BRUSHES, Camel Hair, extra large double quills, each ........ ..... , ...... $0.50 Camel's Hair, flat, tin bound, wooden handle for scale pans, etc. Width, inches ............................ */2 1 Each .................................... $0.25 .35 Camel's Hair, flat, hard rubber bound, wooden handle. Width, inches .................................. 1 Each ........................................... $0.50 Camel's Hair, round, polished handles. No ............................ Each ............ .................. , .45 .60 .75 1.00 1 $0.15 .20 3 .25 4 .30 BRUSHES, Glass, spun glass for acids, each $0.50 BRUSHES, Bristle, wire frame with wooden handle, for cleaning jars, grad- uates, etc., each $0.30 1925 BRUSHES, Bristle, with wooden handle, for cleaning jars, cylinders, etc., length, 12 inches. Number of rows 3 4 6 Each $0.35 .45 .60 1927 C 1927(a) •SHI 1927 BRUSHES, Bristle, for cleaning volumetric flasks, with pliable end, adapting itself to the curvature of flasks. Size 1 2 3 For Flasks, c.c 250 500 1000 Each $0.30 .40 .50 1927(a) BRUSHES, Bristle, with wire handle for cleaning large tubes, cylinders, etc. Length, inches 10 12 15 20 Each $0.15 .20 .25 .30 1928 BRUSHES, for Narrow Tubes, long wire handle, length of bristle, 2 inches, per dozen $0.30 61 1929 1929 BRUSHES, 1930 . BRUSHES, 1931 BRUSHES, 1932 BRUSHES, 1933 BRUSHES, 1935 BRUSHES, 1930 1932 1935 Test tube, rattan handle with sponge attached, so called pro- bangs. Each, lOc. Per dozen $1.10 Test tube, bristles on tinned wire handle, with bristle end. Each, 8c. Per dozen 60 Test tube, bristles on brass wire handle, with bristle end. Each, lOc. Per dozen 1.10 Test tube, bristles, on tinned wire handle, with sponge end. Each, 8c. Per dozen 75 Test tube, bristles on brass wire handle, with sponge end. Each, lOc. Per dozen 1.10 Test tube. On tinned iron wire; bristle. Each, 5c. Per dozen . 30 1950 1952 1950 BULB, Chancel's, for finding specific gravity of gases $7.50 1952 BULB, Glass, with tube at bottom for rubber tubing, to be used as a water or mercury reservoir. Capacity, c.c 125 250 500 1000 Each $0.50 .60 1.00 1.50 1960 1962 1964 1966 1960 BULB, NITROGEN, Arndt & Kopp's, with 4 bulbs $0.50 1962 BULB, NITROGEN, French pattern 50 1964 BULB, NITROGEN, Fresenius', for direct titration : . . .75 1966 BULB, NITROGEN, Haberman's 1.75 62 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 1969 1970 1972 1974 1968 BULB, NITROGEN, Shepherd's, with glass tube and cork $0.50 1969— BULB, NITROGEN, Shepherd's, with stopper ground in, 1.25 1970 BULB, NITROGEN, Vollhard's 50 1972 BULB, NITROGEN, Wills & Varentrapp's, with 3 bulbs 50 1974 BULB, NITROGEN, Wills & Varentrapp's, with 4 bulbs. . 50 1980 1982 1986 1989 BULB, POTASH, Bowen's (See No. 3238). 1980 BULB, POTASH, Delisle's, with ground in Ca CL tube, for many uses the shape of this apparatus will readily recommend itself. Complete, with aluminum foot $3.50 1982 BULB, POTASH, Geissler's, with Ca Cla tube, cork joints 1.75 1986 BULB, POTASH, Geissler's, with Ca Cl, tube between the bulbs 1.75 1988 BULB, POTASH, Geissler's, with Ca CU tube between the bulbs and ground on 2.25 1989 BULB, POTASH, Wetzel's, a modification of the Geissler's with great ab- sorbing power 2.50 1990 1992 1996 1990 BULB, POTASH, Liebig's $0.75 1992 BULB, POTASH, Mitcherlich's 75 1994 BULB, POTASH, Mohr's 1.50 BULB, POTASH, Winkler's, spiral form 1996 BULB, POTASH, Small 1.25 1998 BULB, POTASH, Medium 1.75 2000 BULB, POTASH, Large .3.00 LABORATORY SUPPLIES AND CHEMICALS 63 2001 2002 2003 2005 2001 BULB, Potash, Vanier's, with drying tube combined, used in combustion trains for COa absorption. (Patented) $10.00 2002 BULB, Absorption, Fisher's, the lightest and most compact tube made .... 5.00 2003 BULB, Bowen's; the construction of this bulb is such as to insure a thor- ough absorption of the gas. Small 2.00 2004 BULB, Bowen's, large 2.50 2005 BULB, Potash, New, as designed by C. M. Johnson, for absorbing and weighing COa 2.00 2007 2008 2006 BULB, Nesbitt, Carbon Combustion Bulb (designed by C. E. Nesbitt, Chief Chemist, Carnegie Steel Co., Edgar Thomson Works). For the rapid absorption of COa by Soda Lime, in Carbon determina- tions in iron and steel. With this bulb the combustion can be run very fast, and safely completed in 6 minutes if so desired. The bulb is refilled in less than one-half of a minute. A slight turn of the stopper closes both inlet and outlet tubes so that bulb is sealed. To Fill.— Place layer of glass wool, y4 inch thick in bottom; add about 60 grams of 12 mesh soda lime, 15% moisture; insert l/4 inch layer of asbestos fibre; add 10 grams of Pa O5; then another thin layer of asbestos and a thin layer of glass wool, filling bulb to neck. Fill the hollow stopper with cotton. Bulb weighs about 135 grams filled. Using a 1.363 gram sample, 125 determinations of a .50 carbon steel can be made without refilling ...................... $ 4.75 2007 BULB, Fleming, Carbon Combustion Bulb, for the rapid absorption of COa by soda lime in carbon determinations in iron and steel. The upper bulb is filled with phosphoric anhydride, the lower bulb with soda lime 2008 BULB, Absorption, Wesson's ................. 4>00 64 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2010 2012 2014 2010 BULBS, Rubber, for pipettes, etc. Capacity 2 5 25 50 100 Each $0.05 .10 .25 .35 .50 2012 BULBS, Rubber, with hard rubber valves for exhaust and pressure. Capacity, 50 c.c., each $0.40 2014 BULBS, Rubber, with double valve, for use with wash bottles for pressure. . .35 BULBS, Rubber, pair for constant blast. See Blowers, hand, No. 1588. 2030 2034 2038 2040 2030 BURETTE, Automatic, Squibb's latest form, complete with clamp and reservoir. Capacity, 50 c.c., graduated to 1/10 c.c $ 7.50 2034 BURETTE, Automatic, Knoefler's. Complete with reservoir, clamps, bulbs, etc., burette 50 c.c., 1/10 10.00 2038 BURETTE, Brady's, a new design used by the Illinois Steel Co. Capacity, 100 c.c., holding 50 c.c., in the bulb and graduated from 50 c.c. to 100 c.c., 1/10 c.c. on tube below the bulb 4.50 2040 BURETTE, Dispensing, for expensive liquids, with Geissler's stopcock. Capacity, c.c 100 250 500 1000 2000 Graduated to c.c 1 5 10 25 50 Each $2.75 3.75 5.50 6.75 8.50 2042 BURETTE, Fresenius', with glass stopcock. Capacity, c.c 10 25 50 50 100 100 Graduated to c.c 1-JO 1-10 1-5 1-10 1-5 l-lo Each $1.50 2.00 2.50 3.00 3.75 4.75 LABORATORY SUPPLIES AND CHEMICALS 65 2050 2052 J 2054 2056 2057 2043 BURETTE, Gawalowsky, with glass stopcock and glass side tube, with stop- cock for filling from reservoir. Capacity, c.c 25 50 75 100 Graduated to c.c 1-10 1-10 1-10 1-10 Each $4.50 5.25 6.00 7.25 2050 BURETTE, Mohr's, most accurately graduated, for pinchcocks, with tip and rubber connection. Capacity, c.c 10 25 50 50 75 100 100 Graduated to c.c 1-10 1-10 1-10 1-5 1-10 1-10 1-5 Each $0.60 ,90 1.75 1.50 2.00 2.75 2.50 2052 BURETTE, Mohr's, for pinchcocks, with side filling tube, and with tip and rubber connection. Capacity, c.c 10 25 50 50 75 100 100 Graduated to c.c 1-10 1-10 1-10 1-5 1-10 1-10 1-5 Each $0.75 1.10 1.90 1.75 2.25 3.00 2.75 2054 BURETTE, Mohr's, with Geissler's glass stopcock. Capacity, c.c 10 25 50 50 75 100 100 Graduated to c.c 1-10 1-10 1-10 1-5 1-10 1-10 1-5 Each $1.50 1.75 2.25 2.00 2.75 3.25 3.00 2056 BURETTE, Mohr's, with glass stopcock and side-filling tube. » Capacity, c.c 10 25 50 50 75 100 100 Graduated to c.c 1-10 1-10 1-10 1-5 1-10 1-10 1-5 Each $1.75 2.00 2.50 2.25 3.00 3.50 3.25 2057 BURETTE, Automatic, with zero point and overflow cup. With G. & F. three- way cock for discharging and filling from reservoir. Capacity, c.c., graduated to 1/10 c.c 25 50 100 Each $4.25 5.75 7.25 2057a BURETTE, Automatic, as above, but with tip for pinchcock instead of stop- cock. Graduated in 1/10 c.c. Capacity, c.c 25 50 100 Each $2.75 4.25 5.75 66 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2058 2060 2062 2068 4 2066 2069 2058 BURETTE, Rammelsberg, with side tube to connect with reservoir. Capacity, c.c 25 50 50 100 Graduated to c.c 1-10 1-10 1-5 1-5 Each $2.50 3.00 3.00 3.75 2060 BURETTE, Schellbach, with dark enameled stripe on white enameled back- ground, giving definite meniscus, with tip and rubber connections. Capacity, c.c 25 50 50 100 100 Graduated to c.c 1-10 1-10 1-5 1-10 1-5 Each $1.50 1.75 1.75 3.00 2.50 2062 BURRETTE, Schellbach, as above, with glass stopcock. Capacity, c.c 25 50 50 100 100 Graduated to c.c 1-10 1-10 1-5 1-10 1-5 Each . . . '. '.$2.50 3.00 3.00 4.50 4.25 2064 BURETTE, Schellbach's, as above, with Greiner & Friedrich's three-way stop- cock. Capacity, c.c 25 50 75 100 Graduated to c.c 1-10 1-10 1-10 1-10 Each ....$2.75 4.50 5.25 6.00 2066 BURETTE, Schiff's, with attached reservoir having a capacity of about 250 c.c. Capacity of burette proper, 50 c.c. Graduated to 1/10 c.c. Each $8.50 2068 BURETTE, Greiner & Friedrich's, with three-way stop-cock and tube for filling from reservoir. Capacity, c.c 25 50 75 100 Graduated to c.c 1-10 1-10 1-10 1-10 Each .$2.75 3.75 4.25 4.75 2069 BURETTE, Sink's, English form, with support. Capacity, c.c 10 25 50 100 Graduated to c.c 1-10 1-10 1-10 1-5 Each $1.50 2.00 2.50 3.25 Burettes of Special design made to order — Send us your inquiries — Estimates cheerfully given. LABORATORY SUPPLIES AND CHEMICALS 67 2071 2072 2073 2074 BURETTES FOR PRECISION WORK These burettes have circular markings (all around) for very accurate reading; they are graduated with extreme care with distilled water at 15° C. by weighing on a delicate balance and are standardized to meet the requirements of the National Bureau of Standards, Washington. A certificate of accuracy can be supplied with each instru- ment, if desired, at a nominal cost. 2071 BURETTE, Mohr's, with tip and connection, for pinch cock. Graduated to meet the requirements of the U. S. Bureau of Standards. Capacity, c.c 25 50 100 Graduated to c.c 1-10 1-10 1-5 Each $5.00 6.50 7.50 2071a BURETTE, "Normal," Mohr's, with tip and connection, for pinch cock. Stand- ardized by the National Bureau of Standards, Washington, D. C. with control stamp and certificate of corrections. Capacity, c.c 25 50 100 Graduated to c.c 1-10 1-10 1-5 Each $8.50 10.00 12.50 2072 BURETTE, Geissler's, with straight stop-cock. Graduated to meet the require- ments of the U. S. Bureau of Standards. Capacity, c.c 25 50 100 Graduated to c.c 1-10 1-10 1-5 Each $6.00 7.50 9.00 68 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2075b 2075 2078 2076 2072a BURETTE, "Normal," Geissler's, with straight stop-cock. Standardized by the National Bureau of Standards, Washington, D. C, with control stamp and certificate of corrections. Capacity, c.c 25 50 100 Graduated to c.c 1-10 1-10 1-5 Price, each $9.50 11.25 13.50 2073 BURETTE, Mohr's; with Geissler's stop-cock; Fresenius pattern. Graduated to meet the requirements of the U. S. Bureau of Standards. Capacity, c.c 25 50 100 Graduated to c.c 1-10 1-10 1-5 Price, each $5.00 6.50 7.50 2074 BURETTE, with three-way stop-cock. Graduated to meet the requirements of the U. S. Bureau of Standards. Capacity, c.c 25 50 100 Graduated to c.c 1-10 1-10 • 1-5 Price, each $6.00 7.50 9.00 2075 BURETTE. After design of Dr. Edward S. Johnson. For quick meas- uring of reagents. Complete with 60 c.c. burette, 4 liter bottle, stand, etc., including also rubber force pump and pinch- cock $10.00 2075a BURETTE, Morse's Calibrating. For calibrating burettes, flasks, pipettes, etc. Complete set of three 15.00 Part 1 7.50 Part 2 4.75 Part 3 5.75 2075b BURETTE, Weighing, Ripper's, graduated to 60 c.c. in 5 c.c. subdivisions.. 5.00 2076 BURETTE Attachment, for connecting the burette with reservoir, com- plete as per sketch 50 2078 BURETTE Caps, to protect contents from dust, per doz 60 LABORATORY SUPPLIES AND CHEMICALS 69 2080 2082 2084 2084a 2084b 2080 BURETTE Float, Erdmann's $0.50 2082 BURETTE Float, with points, to prevent adhering to walls 50 2084 BURETTE Float, Beutell's 50 2084a BURETTE Funnels, for filling burettes 20 2084b BURETTE Meniscus-Reader, improved with lens and reading line 1.50 2085 BURETTE Tips, per dozen . .25 BURNERS 2086 2089 2090 2092 2085 BURNER, Argand, with mica chimney, used in iron and steel laboratories for keeping even temperature $1.50 2086a Extra Mica Chimneys 35 2087 BURNER, Argand, like No. 2086, but with Copper Chimney 1.10 2087a Extra Copper Chimneys 25 2088 BURNER, Argand, like No. 2086, but with glass chimney 1.25 2088a Extra Glass Chimneys 25 2089 BURNER, Argand, like No. 2086, but without chimney and base, for screw- ing into gas pipe •. 75 2090 BLAST LAMPS, Bunsen's for gas 3.25 2092 BLAST LAMPS, Fletcher's, for gas; upright 4.00 (Can also be used as Bunsen burner.) 70 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2094 2096 2097 2094 BURNER, Fletcher's Compound; for glass workers and experimental laboratories $10.00 2096 BURNER, Wiesnegg's, French form, mounted on ball joint 5.00 2097 BURNER BLAST LAMP, Bunsen, extra large size for gas, very power- ful flame with set of two tips 9.00 2101 2103 2099 BURNER, Blast. Same as used at the Massachusetts Institute of Tech- nology. This burner is fitted with needle valves which afford accurate adjustment of the air and gas supply. A set of 3 gas tips of various sizes furnished with each burner $ 5.00 2101 BURNER, Blast, Meker's. With short inlet tubes, for general work. With these burners you can get the highest temperature obtainable with a gas blast burner, requiring air pressure from 1 to 2 pounds per square inch. Size No. 2, height 5%i inches 4.00 2101a BURNER, 2101b BURNER, 2101c BURNER, 2103 BURNER, 2103a BURNER, Blast, Meker's. Same as No. 2101, but larger. Size No. 4, height rll/2 inches • • 5.75 Blast, Meker's. Same style as No. 2101, but with long inlet tubes. To be used in furnaces, etc. Size No. 2, height 5^$ inches 5.20 Blast, Meker's, Same as No. 2101b, but larger. Size No. 4, height 1l/2 inches 7.25 Blast, Meker's. Pipe shaped, horizontal. Diameter of flame, 1J4 inches. Height of burner, 6^$ inches 7.50 Blast, Meker's. Same as No. 2103, but larger. Diameter of flame, 1^4 inches. Height of burner, 8 inches ~. . . 14.00 LABORATORY SUPPLIES AND CHEMICALS 71 2105 2107 2109 2105 BURNER, Blast, for Gasoline. Upright flame especially designed for Laboratories not having a gas supply; gives a clear blue, flame, which is adjustable. The burner is swivelled and can be burned in any position. Provided with support stand for holding cru- cibles, evaporating dishes, etc. Absolutely safe. Capacity, 1 pint. Consumption, y^ pint per hour. Price, each, net $7.50 2107 BURNER, Blast, for Gasoline. Same as above, but smaller, and without swivelled burner. Capacity, y2 pint. Consumption, % pint per hour. Price, each net 5.25 2109 BURNER, Blast, for Gasoline. Can be used indoors or outdoors for solder- ing, melting, etc.; steel attachment included for holding soldering copper. Capacity, 1 qt. Consumption, l/2 pint per hour. Price, each, net : 6.00 2111 2113 2111 BURNER, Blast, or automatic hand blowpipe on stand. Blowpipe may be detached and used in the hand if desired $ 7.50 2113 BURNER, Blast, Glass blowers fires, complete. Set of 2-1 light burners, per set 7.50 Set of 2-2 light burners, per set 12.00 Set of 2-3 light burners, per set 15.00 Extra tips for above, each .60 72 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2114 2114a 2114b 2114 BURNER, Alcohol, Bartel's. Very powerful, no wick required. Five feet of flexible metallic tubing furnished to connect burner with reservoir $8.50 2114a BURNER, Alcohol Blast. Copper, upright blast 2.50 2114b BURNER, Alcohol. Stove for heating. Made of brass, generates its own gas. Capacity, 7 oz 2.00 2115 2115b 2115d Burners, Koch Safety, with automatic stop-cock, to close off the gas when the flame has gone out. These burners are very useful in laboratories, especially for incubators, which usually need only a small flame to keep up the required temperature. They are very simple in construction and not liable to get out of order. 2115 BURNER, Koch Safety, small, 5 inches high with A-inch burner tube $ 6.50 2115a BURNER, Koch Safety, large, as above, 6 inches high with A-inch burner tube 7.50 2115b BURNER, Koch Safety, small, 9 inches high, adjustable to 13 inches 9.50 2115c BURNER, Koch Safety, large, as above, 10 inches high, adjustable to 14 inches 10.50 2115d BURNER, Koch Safety, large, heavier pattern on adjustable stand, with a weight on stop-cock instead of the spring 12.00 2115e BURNER, Koch Safety, same as above but with two burners 15.00 LABORATORY SUPPLIES AND CHEMICALS 73 2115g 2115g BURNER, 2115h BURNER, 2116 BURNER, 2117 BURNER, 2118 BURNER, 2120 BURNER, 2122 BURNER, 2124 BURNER, 2126 BURNER, 2116 2117 2122 2126 Bunsen's, Micro, 2-inch high, tube %-inch $0.50 Bunsen's, Micro, 3-inch high, tube ^-inch, nickel plated 60 Bunsen's, with air regulator 30 Bunsen's, central draught burner, open at bottom, avoiding danger of clogging gas orifice 30 Bunsen's, with 2 tubes, and air regulators 1.50 Bunsen's, with 3 tubes, and air regulators 2.00 Bunsen's, with 4 tubes, and air regulators 3.00 Bunsen's, with fork, to attach to support 1.50 Bunsen's, with stopcock 1.75 2127 2128 2130 2131 2127 BURNER, Boyce's. For gasoline or coal gas with regulators for air and gas. Height, 5T/2 inches $1.50 2128 BURNER, Adjustable Bunsen, for burning gas of variable quality. The size of the orifice through which the gas escapes is adjusted by turn- ing the milled cap-nut seen inside the arm which supports the upright tube. Its adjustability renders it a favorite burner for those using gasoline gas, or the mixture of gasoline vapor and air made by gas machines 1.50 2130 BURNER, Adjustable Bunsen, with attachment for triangles, dishes, etc., inside dia. 3 inches 2.25 2131 BURNER, Tirill's Form, for coal or gasoline gas. This burner is made entirely of brass, and is considered by some to be the best burner made . . 1.50 74 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2131a 2133 2133b 2131a BURNER, Bunsen, adjustable, improved form, for coal or gasoline gas. Height, §l/2 inches; diameter of tube Y* inch $1.25 2131b BURNER, Bunsen, same as above, but with J^ inch I. P. male thread in- stead of base. Height 6 inches • • 1.00 2133 BURNER, Teclu's, small size, with air and gas regulator. Height 6 inches; diameter of tube Yz inch 1.75 2133a BURNER, Teclu's, large size, giving a large and powerful flame, with regu- lator for air and gas. Height, iy2 inches; diameter of tube, % inch 2.50 2133b BURNER, with stop-cock and pilot light. The dotted lines show the small tube for pilot light, which is on the inside of the burner tube. Height, 6 inches; diameter of tube, l/2 inch 1.75 2133c 2134 2133c BURNER, Boekel's, for burning gases of various qualities. By turning the knurled part A, you can increase or lower the flame, the flow of gas and air being regulated automatically, and therefore the burner will always retain a blue flame. B is the set-screw by which to regulate the burner-tip C, sup- plying more or less air, according to the quality of gas. The supply of air is regulated by inserting the screw into the next slot, either to the right or to the left. This is the best self- adjusting Bunsen burner made, and we can recommend it to give entire satisfaction. Height, 6 inches; diameter of tube, l/2 inch 1.75 2134 BURNER, Chaddock's, of porcelain; incorrodible; a new Bunsen Burner especially designed for use in hoods where metal, on account of the smoky flame, soon corrodes; also desirable for all laboratory purposes, no retort stand and wire gauze being required. Com- plete wilh support for dishes, chimney and three asbestos pads. . 2.50 LABORATORY SUPPLIES AND CHEMICALS 75 MEKER BURNERS 2135 2135p 2135r 2135t These burners are very powerful, requiring reasonable gas pressure for economical operation. The temperature of flame is nearly uniform throughout as there is a homo- geneous mass of burning gas. Size No. 1 is very useful in sealing. Sizes Nos. 2 and 3 are most useful for general laboratory work. Size No. 4 is very useful as an ordinary blast burner. Size No 1 2 3 4 5 Diameter of Burner, mm 16 20 24 30 43 Height of Burner, mm 115 130 155 190 250 2135 BURNER, Meker. For coal gas. 2135a BURNER, Meker. For coal gas. 2135b BURNER, Meker. 2135c BURNER, Meker. 2135d BURNER, Meker. 2135e BURNER, Meker. 2135d BURNER, Meker. 2135e BURNER, Meker. Size No. 1 $2.10 Size No. 2 2.30 For coal gas. Size No. 3 3.35 For coal gas. Size No. 4 3.75 For coal gas. Size No. 5 '. . . 7.85 For gasoline gas. Size No. 1 2.65 Size No. 2 2.80 Size No. 3 4.00 Size No. 4.. . 4.25 For gasoline gas. For gasoline gas. 2135f BURNER, Meker. For gasoline gas. 2135g BURNER, Meker. For gasoline gas. Size No. 5 8.60 2135h BURNER, Meker. For natural gas. Size No. 1 2.65 2135J BURNER, Meker. For natural gas. Size No. 2 2.80 2135k BURNER, Meker. For natural gas. Size No. 3 4.00 21351 BURNER, Meker. For natural gas. Size No. 4 4.25 2135m BURNER, Meker. For natural gas. Size No. 5 8.60 2135p BURNER, Celeritas. Improved Meker form. Adjustable, can be used for either coal, gasoline or natural gas. Size No. 2, diameter of burner top, 20 mm 2.20 2135r BURNER, Meker. Flat Flame. Top of burner, 15x50 mm. Height of burner, 225 mm. for coal gas 6.65 BURNER, Meker. Same as No. 2135r, but for gasoline gas 7.25 BURNER, Meker. Same as No. 2135r, but for natural gas 7.25 2135s BURNER, Meker. Four burners, size No. 3, mounted in a row on a gas supply pipe, for coal gas 16.00 2135t BURNER, Meker. Same as No. 2135s, but for natural gas 19.00 (These burners can be supplied with any number of any size burner desired.) We can quote very attractive prices on Meker burners when required in large quantities. Write us for discount on wholesale requirements. 76 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2136 2138 2140 2136— BURNER, Bunsen's, low shape, with air regulator $0.50 2138 BURNER, Fletcher's, with spider, for holding dishes, etc 1.25 2140 BURNER, Fletcher's Star flame, crown top, with stand. Size, inches - \y2 3 zy2 Each $1.00 1.25 1.50 2144 2145 2142 BURNER, Bunsen's, 4 burners in one row for heating long tubes $5.00 2144 BURNER, Bunsen's, as No. 2142, with stopcock for each burner 6.50 2145 BURNER, Bunsen, 4 tubes in line, each with stopcock and wing top, com- plete with adjustable support and trough for heating tubes 8.00 2146 2147 2146 BURNER, Bunsen's Ring form, to be attached to any support. Diameter of rings, inches 3 4 5 6 Each .....$1.25 1.50 1.75 2.00 2147 BURNER, Same with stopcock 2.00 2.25 2.50 2.75 LABORATORY SUPPLIES AND CHEMICALS 77 2149 2151 2148 2149 BURNER, Fletcher's Cast Iron Evaporating Burner. Sizes, inches 4 5 Each .../..'..'. ]$2.00 2.50 BURNERS, Radial, Fletcher's. No. 1 R burner ring 3^-in. gas used 12 feet per hour $2.50 No. 2 R burner ring 5 -in. gas used 18 feet per hour 3.25 3.50 2149a BURNERS. As above, with wheel valve for gasoline gas No. 1 R ..... No. 2 R ........... ....... '/.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'. 2150 BURNERS, Fletcher's Standard Boiling Burner. Diameter, inches, for vessels ...... . Each ........................................ 2151 BURNERS, Low form, extra large, with gauze top; diameter, 2% inches; length, 14 inches, each 3.75 4.50 .$1.50 height, 7 2.00 8 3.75 5 inches; 10 7.50 .$3.00 2151a 2152 2151a BURNERS, Boiling, Fletcher's, solid flame. Small, diameter 3J^-inch, gas used 12 feet per hour ...... $1.75 Large, diameter 4^-inch, gas used 35 feet per hour .......... . . . 3.50 2151b Extra Perforated Metal Caps for above. Small, each Large, each 2152 BURNER, Fletcher's New Laboratory Burner, with stand for vessels and sand- bath. Support for flask, diameter .................... 41^ 5^ 7 8 Support for vessels flat, diameter ............. §y2 ny2 9 n Each ..... '• .................................. $3.00 4.00 5.00 8.50 78 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2153 2153 BURNER, Hydro Carbon, burning vaporized kerosene which is auto- matically generated as fast as needed from ordinary kerosene; gives a hot blue flame without smoke or smell; height, 9 inches; diameter of base, 9 inches $8.50 2154 BURNER, same as above, but without tripod • • 7.50 2155 The Case "Inverted Type" of hydro-carbon burner is of the heighest type yet pro- duced. It is a burner adapted for high grade distillates in the construction of which all the unsatisfactory features of earlier types have been eliminated. It has the distinctive feature in that it accomplishes the rapid preliminary heating in the cleanest and safest way and is compact and easily operated. In fuel consumption, the Case "Inverted Type" requires but three-fourths as much as any other burner of equal size to produce the same number of heat units. 2155— BURNERS, Case Hydro-Carbon. Diameter V/2 \Y$ 2 2% Zl/2 Each $12.00 13.50 14.00 15.00 16.50 LABORATORY SUPPLIES AND CHEMICALS 79 2156 2156 2158 2160 2161 2162 2164 2166 2170 2172 2174 2158 2160 2161 2162 2166 2164 2170 2172 2174 BURNER, BURNER, BURNER, BURNER, BURNER, BURNER, BURNER, BURNER, BURNER, BURNER, Attachment, Blowpipe Tube to set into the burner $0.85 Attachment, Short Tube to set over the burner, with rest for the blowpipe 25 Chimneys, of Sheet Iron .25 Chimneys, of Sheet Iron, with support 25 Crowns, for heating dishes 35 Forks, with attachment for burner 50 Gauze Top, gives a large round flame 35 Stars, for chimney supports 25 Tripods, for supporting dishes 25 Wingtop, for bending glass tubing • • . .25 2175 2175(a) 2175(e) 2175 BURNER, Guards, of vitrified earthenware. Protects the flame from drafts and affords a rigid and convenient support, 9 inches high, 8 inches diameter at bottom and 5 inches at top. Will be found a desirable addition to any laboratory $0.50 2175(a) BURNER TUBE. Metallic, Flexible. Each tube has a rubber connec- tion at both ends. Length, 2 feet 30 Same as No. 670, but 3 feet long 40 Same as No. 670, but 4 feet long 50 Same as No. 670, but 6 feet long 75 2175 (b) 2175 (c) 2175(d) 2175(e) BURNER BURNER TUBE. TUBE. TUBE. BURNER BURNER ATTACHMENT. For supporting dishes, etc. Without burner 1.00 We are in position to manufacture or furnish many other styles of burners not listed in this catalog. If interested in any particular style, we would be pleased to have you send us drawing and we will quote prices. Please advise quantity required. 80 A. DAIGGER & COMPANY, CHICAGO, U. S. A. CALORIMETERS 2176 2176 CALORIMETER, Standard— Parr's. This instrument has been devised by S. W. Parr, professor of Applied Chem- istry at the University of Illinois. The marked features of the method are accu- racy, simplicity, ease and rapidity of manipulation. The results are absolute and not relative. The operations are such as can be carried on by one not especially skilled in laboratory processes. Oxygen under high pressure or any pressure is not used. Sodium peroxide is used as the combustion medium. The time consumed in conducting a test on a weighed and dried sample should not exceed fifteen or twenty minutes. With this instrument a determina- tion of the heat units has been made on the various types of fuel selected from widely different sources, including coal, coke, lignite and oils. The outfit consists of the apparatus as indicated in cut, including a fine thermometer graduated to 1/20° F. A two-litre measuring flask, chemical recep- tacle, measuring cup, 5-inch 100-mesh brass sieve with bottom, chemicals suffi- cient for fifty determinations, including special chemical for petroleum, etc., pincers, ignition wire, reading lens and camel's-hair brush. Latest modification, with improved bomb, complete for electrical ignition, without motor $85.00 The following items are not included in the regular outfit, as they are usually to be found in Chemical Laboratories: Electric Motor with variable speed for either direct or alternating current 110 or 220 volt 25.00 In ordering state current and voltage required. Bank of Resistance for 110 volts 7.00 Bank of Resistance for 220 volts 8.00 Water Motor and support 9.00 LABORATORY SUPPLIES AND CHEMICALS 81 Replacements : Thermometer 65 — 90° F. with certificate $12.00 Thermometer 65 — 105° F. with certificate 13.00 New Thermometer Reading Lens 3.00 Ignition wire, electric, per card 75 Gaskets for bomb, per dozen 50 Chemical— ^per J4 Ib. can (special sodium peroxide) 1.10 Chemical — per y2 Ib. can (special sodium peroxide) 1.95 Chemical — per 1 Ib. can (special sodium peroxide) .' 3.00 Accelerator — per bottle, 2 oz. capacity 1.00 Special chemical, per bottle 1.00 2177— PARR'S NEW PEROXIDE CALORIMETER BOMB. A new and greatly improved form of bomb for the Parr Standard Calorimeter has been devised which has marked advantages over the old pattern. A summarized statement of advantages for more convenient reference is given below: 1. A removable fusion cup, or crucible, is provided with an extra cup for duplicating determinations. These cups are made of a special alloy which is immune to the action of the fused alkali. The materials making up the charge can be weighed out and added directly to the cups, which may then be transferred to the holders for use as desired. 2. The electric terminals are short and sturdy, and do not become bent* or broken by use. 3. Provision is made by means of an air space about the fusion cup whereby the cup is permitted to come to a red heat, after which the surrounding water is brought into con- tact with the cup for quick extraction of the heat. This high temperature throughout the mass avoids the cooling eect of metallic walls which are in contact with water, thus secur- ing a complete combustion with all types of coals. 4. By use of the fusion cups a removable bottom is avoided and the process of cleaning out the fusion is very much expedited. The cups are short enough to readily go into a small No. 3 or No. 4 beaker lying flatwise, in which way the fusion is readily dissolved out without loss. 5. The electric contacts are simplified and made much more convenient. 6. A simple additional accessory makes it possible to use the fusion cups for sulphur determinations alone. This is without doubt the ideal method for making a determination of sulphur in all organic compounds and especially to be recommended for use in determining the sulphur in coal. See description following under No. 2179. Price $35.00 2177 2179 PARR'S NEW SULPHUR BOMB. sac For sulphur determinations which are to be made inde- pendently of the calorimetric process, a special apparatus, as shown in Fig. 2D, has been devised. An adaptation has been made of the same fusion cup as that used in the calorimeter bomb (Fig. 2A). By reference to Fig. 2D, it will be seen that the fusion cup (2AC) has a cover (7AC) with a gasket (27AC), and a screw cap (5AC), by means of which the container is tightly sealed. The lower half of the fusion cup, however, is exposed, and by applying heat to the bottom of the cup the charge is readily ignited. After a moment, it is held under the tap for cooling, after which the cup is removed and the fusion dissolved otft. In this way the solution containing all of the sulphur as sulphate may be made ready for precipitation in less than five minutes and with no possible accession of sulphur from gas flames or other sources of contamination. Results obtained by this method are believed to be the most reliable of any, and the time element is decidedly to its advantage. , For organic halogens, to replace the ordinary Carius method in the determination of chlorine, bromide and iodine, the use of this bomb will be found exceedingly con- venient and expeditious. $23.00 A. DAIGGER & COMPANY, CHICAGO, U. S. A. The method of holding the bomb in place for screw- ing on the cap and admitting the oxygen supply is simple and exceedingly convenient. The accessories for this part of the operation are shown in figure above. 2181 2181 CALORIMETER— Parr's, Oxygen Bomb Calorimeter with "Illium" Bomb. Not the lease among the achievements in the construction of oxygen bombs of the Mahler-Atwater type is the doing away with the porcelain or platinum lining as a result of the development of an alloy which is proof against the solvent action of the acids generated in connection with the combustions. The first successful bomb made of this metal has been in service for a number of years and has been used in upwards of 2,000 calorimetric determina- tions without giving any evidence of corrosion. Many of the determinations were made parallel with a platinum-lined instrument, and throughout the series there was every evidence of an exact equivalent in the behavior of the alloy (Illium) bomb. The calorimeter complete with bomb, water container, insulating vessel with cover, stirrer and pulley, oxygen connection with gauge, needle valve and couplings, octagon holder for bomb, with spanner wrench, one-half dozen cap- sules of special alloy, reading lens and support, special ignition wire and gaskets. Without motor or thermometers $285.00 ACCESSORIES: Bomb only $210.00 Water Container 12.00 Insulating Vessel with cover, stirrer and pulley 50.00 Oxygen Connection with gauge, needle valve and couplings 27.50 Octagon Holder for Bomb, with spanner wrench 12.00 Electric Motor with variable speed direct or alternating 25.00 Capsules (special alloy), Illium Metal, each 3.00 Thermometer graduated in 1/20° F. with U. S. Bureau of Standards cer- tificate , 15.00 Reading Lens and support 3.00 Ring Support for holding Calorimeter cover with thermometer 2.75 Special Ignition Wire, per card 75 Large Gaskets for Bomb, per dozen 1.00 Small Gaskets for Valve, per dozen l.OO Small Gaskets for Union, per dozen .50 Extras : Beckman's Differential Thermometer graduated to 1/100° C, with certifi- cate of standardization 25.00 Oxygen cylinder with 100 cubic feet of oxygen, cylinder returnable 35.00 Ring Support for holding bomb cap while adjusting fuse wire, fuel cap- sule, etc 3.00 LABORATORY SUPPLIES AND CHEMICALS 83 2183 2183 CALORIMETER— Parr's Adiabatic with "Illium" bomb. Another form of Calorimeter, and that of the Adiabatic type, has just been per- fected, and its operation in actual use has been so eminently satisfactory that it is now being regularly manufactured for the trade. It is the completion of a design which has been in process of development for some years by Professor S. W. Parr of the Univer- sity of Illinois. The adiabatic principle has been secured, not by the use of the Dewar, or vacuum arrangement, with its somewhat questionable immunity from variation, nor is use made of any chemical or electrical method of heating the surrounding water. The principles involved are carried out as follows: A supply of hot and cold water is automatically provided immediately underneath the desk on which the calorimeter is installed. This may be drawn upon either to raise or lower the temperature of the water in the surrounding medium. By means of a stop cock and overflow, hot water, for example, can be instantly dis- charged into the jacketing water. The lag, therefore, is only that incident to the stirring of the water and the response as shown on the thermom- eter occurs at once. Showing Water Reservoir Heated by Gas Flame Price Without Motor or Thermometer $375.00 84 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2185 2185 CALORIMETER, Emerson's, one of the most modern bomb calorimeters for determining the heating value of solid and liquid fuels. The Bomb is made of steel, consisting of two cups joined by means of a heavy steel nut. The lining is of sheet metal, spun to fit the interior. The pan holding the combustible is usually of nickel and so are the supporting wires. The fuse wire for general fuel testing should be of platinum. The Calorimeter jacket is a double walled copper tank. The calorimeter bucket is of light sheet brass. The Stirring Device consists of a propeller fitted shaft inclosed in a vertical tube to facilitate its action in circulating the water. The stirrer is mounted on a post on the calorimeter jacket as is the thermometer holder. The motor is driven by a 110-volt circuit and should be placed in series with a 16 C. P. lamp. If so desired, a battery driven motor can be specified in ordering the apparatus. The Oxygen Piping is especially strong and durable and is designed for two cylinders. Other accessories such as iron plate holder, swivel table, spanner or wrench are furnished with the outfit. A pamphlet describing the instrument fully may be had upon application. 2185(a) CALORIMETER, The complete Calorimeter as described with Nickel lined bomb <, Net 180.00 2185(b) CALORIMETER, As above, with Gold rolled copper lined bomb and nickel fittings "Net 275.00 2185(c) CALORIMETER, As above, with Platinum lined bomb and Platinum fittings, according to the market price of platinum, about Net 490.00 ACCESSORIES: CALORIMETER THERMOMETER, Standard, graduated on stem from about plus 18 to 30°C in 1/100°C with certificate of corrections . Net 80.00 CALORIMETER THERMOMETER, as above, without certificate Net 15.00 CALORIMETER THERMOMETER, Beckmann's Differential, with a range of about 6°C graduated in 1/100° C with certifi- cate of corrections Net 80.00 CALORIMETER THERMOMETER, as above, without certificate Net 15.00 CALORIMETER CYLINDERS of Oxygen under high pressure; 40 gal- lons capacity Net 8.25 CALORIMETER CYLINDERS of Oxygen, as above, 100 gallons capacity. Net 17.00 (Cylinders returnable at $6.00 and $12.00, respectively.) New Parts: Nickel Lining for bomb Net 18.00 Gold rolled copper lining for bomb Net 95.00 Fuel pan and support Net 2.25 Nickel fuel pan Net .55 Nickel binding posts for interior of bomb Net .90 Nickel screw for deflector or interior of bomb Net .35 Large lead gaskets. Per dozen... . ..Net 1.50 LABORATORY SUPPLIES AND CHEMICALS 85 1. Bomb. 2. Bomb Holder. 3. Cork Lined Case. 4. Thermometer. 5. Motor. 6. Vacuum Cup. 7. Pressure Gauge. 8. Rheostat. 9. Spanner Wrench. 2191 Briquetting Machine 2191-10 2191 CALORIMETER, The Riche Adiabatic. The Riche Adiabatic Calorimeter is constructed along practical lines, capable of standing the strain of continuous work. The inside walls of the cabinet are lined with one inch pressed cork and on the cover in addition to the cork is a piece of half- inch hairfelt, making a tight joint with the top of the vacuum cup. All fittings are brass, heavily nickeled. The rapidity with which results are obtained is a decided advantage. A complete determination may be made in 10 to 15 minutes with an accuracy of (1) three calories, thus saving from fifty to seventy-five per cent of time. The maximum time required for reading is eight minutes. The bomb is of the Mahler-Kroeker two valve porcelain lined type, guaranteed for 3,000 determinations, but it should be good for at least 8,000 combustions if proper cafe is taken. CALORIMETER, Riche Improved Adiabatic, complete with thermometer $275.00 " " " without thermometer.. 250.00 86 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2193 CALORIMETER — Sargent's, for gas: The only apparatus conforming with the suggestions of American authorities, being the most advanced type of instru- ment for testing the thermal value of inflammable gases. It has the following advantages: (1) The discharge water is weighed to one-hundredth of a pound instead of being measured in a graduate. (2) The discharge water is switched auto- matically from one receptacle to another after each one-tenth of a cubic foot of gas is burned. This eliminates errors due to hand manipulation. (3) Inlet and outlet thermometers are on the same level so that they can be read almost simultaneously. (4) A Wet Pressure Governor controls the pressure of the gas entering the burner and a constant pressure is easily maintained by means of adjustable weights. (5) To maintain a constant flow the inlet and outlet pipes are provided with wiers. A graduated quadrant valve regulates the amount of water used. (6) Since a determination can be made every three or four minutes, a curve of the heat value extending over any length of time may be plotted. (7) The heat value of the gas is determined directly in B. T. U. (8) The Bunsen burner has two tips and is adjustable for gas having 100 to 1500 B. T. U. per cubic foot. (9) The calorimeter is made of copper and brass and is handsomely nickel-plated. (10) The Wet Test Gas Meter is made of heavy brass and tin and has a water level indicator outside of the gauge glass. The meter is graduated to 0.001 cubic foot. The complete outfit consists of the first six items below. PRICE LIST Calorimeter Body with automatic attachment Bunsen burner, tubing, exhaust thermometer and beaker $135.00 Two very high grade inlet and outlet thermometers, graduated to 1/10° F. 17.00 Wet Pressure Governor with weights 17.00 Wet Test Gas Meter, with all attachments 65.00 Special 10-lb. scales weighing to hundredths of a pound 15.00 Two Balanced nickeled weighing pails 6.00 Specially fitted shipping chest • • 50.00 Table of Standard Reduction Factors for Gas 1-50 Descriptive Pamphlet Upon Application. LABORATORY SUPPLIES AND CHEMICALS 87 2195 2197 CALORIMETER— Parr's, for Gas, devised by Prof. S. W. Parr, of the University of Illinois. This instrument is constructed upon radically new lines. A standard and an unknown gas are burned side by side under identical con- ditions. A ratio of values is thus established in a manner which eliminates errors due to radiation, metering, variable pressures, speed of combustion, etc., etc. This is decidedly the most accurate apparatus thus far devised for the measuring of heat values of gases of all types. Price $275.00 2197 CALORIMETER, American Junkers. This apparatus is of the same general de- s i g n (embodying, however, American improvements), and operates on the same principle as the orig- inal German Junkers Calorimeter which has been regarded by gas experts as the most satisfactory calorimeter in use. Calorimeter with all improvements, inlet and outlet water ther- mometers in tenths of a degree with telescopic sights and manufacturers' cer- tificates giving cor- rection factors, if any, exhaust ther- mometer, wet test meter, complete with thermometer, wet regulator with pressure gauge, fine equal arm weighing bal- ance, set brass weights in block, two copper pails, glass graduate for conden- sation, twelve feet pure rubber tubing, correction table for temperature and pressure, booklet on calorimetry, complete as shown in illustration $275.00 2198 CARBONATE APPARATUS— Barker. For determining the percent- age of carbonates in limestone and other materials. The principle upon which the apparatus is based is that of a hydrometer which takes account of the law that when an object (the hydrometer) is immersed in a liquid, it is buoyed up by a force equal to the weight of the liquid displaced by the object. In this apparatus the carbon dioxide gas released by the sample decreases the weight. The apparatus consequently rises in the water in which it is immersed, recording on the graduated scale the percentage of carbonates from which gas escaped. Every hydrometer is thoroughly tested before leaving the factory and is accompanied by a certificate. BARKER CARBONATE APPARATUS, complete with Hydrom- eter, jar, thermometer, graduated cylinder dropping pipette and one pound of Hydrochloric Acid. Complete as described $12.00 2198 Hydrometer only 9.00 88 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2199 2201 2199 2201 CARBON APPARATUS, Parr's, designed by Prof. S. W. Parr, of the Uni- versity of Illinois, for the determination of the total carbon in coal, coke, etc., using the residue from the determination of heat values (with Parr's calorimeter) which has the carbon of the coal combined in the form of sodium carbonate. The estimation is made by liberating the COa and measuring the gas. The outfit as illustrated Net $45.00 CARBON DIOXIDE APPARATUS, Classen's, consisting of flask, con- denser and safety funnel with stop-cock, fitted with rubber stoppers 5.50 CARBON DIOXIDE APPARATUS, Knorr's, for the determination of carbonic acid in carbonates, as recommended for the deter- mination of carbonic acid in baking powder by the Association of Official Agricultural Chemists. All joints are ground to- gether. Each 12.50 N. B. — For other CO2 Apparatus, see Gas Apparatus. 2224 2226 2224 CASSEROLES, glazed with exception of rim, with lip and flat porcelain handle. Coor's ware. Size number 1 23 3a 4 4? 56 7 Outside dia., mm.. 50 70 85 95 110 135 135 165 175 Inside dia., mm 47 66 80 90 105 130 130 160 170 Height, mm 25 35 45 50 62 90 80 95 130 Capacity, cc 30 75 150 210 375 500 750 1250 2000 Each $0.40 $0.50 $0.60 $0.80 $1.00 $1.50 $1.80 $2.25 $3.90 2225 CASSEROLES, Glazed, with exception of rim, with lip and extra long handle. Size number, 4; diameter, 117 mm.; height, 56 mm.; capacity, 360 cc. Each $1.75 2226 CASSEROLES, Royal Guernsey Porcelain, with cover and wood handle. Glazed inside and out. Size number 00 0 1 2 3 4 Capacity, cc 125 250 375 500 720 1000 Diameter, mm 90 105 110 120 152 172 Each $0.50 $0.60 $0.75 $1.00 $1.55 $1.75 2227 CASSEROLES, Fuser Silica. Size number 1 2 3 3a 4 Capacity, cc 30 75 150 810 375 Dia. body, cm 5 7 8.5 9.5 11 Each $2.25 $2.75 $3.25 $4.20 $5.50 LABORATORY SUPPLIES AND CHEMICALS 89 CEMENT TESTING APPARATUS 2229 2229 -CEMENT TESTING MACHINE, Olsen's New Automatic Shot Form. The principal advantages of this machine are as follows: The machine is automatic to its full capacity and is not touched from start to finish of test. The instant the briquette breaks, the breaking lead is read on the dial of the scale. The load is applied with absolute smoothness, and impact from falling shot is eliminated. The cut-off on the shot kettle is practically instantaneous. All shot that has escaped from the kettle has already done its work and the column of falling shot in the air when the specimen breaks is therefore weighed as it should be. A new grip which brings the strain uniformly on the specimen is used. The briquette hangs clear of the frame of the machine, giving plenty of room for the hands when adjusting specimens. This is widely used and thoroughly satisfactory outfit; 1,000 Ibs. capacity; length, 24 inches; height, 26J4 inches; weight, 50 Ibs. Price . . .$135.00 90 A. DAIGGER & COMPANY, CHICAGO, U. S. A. Patented Feb. 8, 1910 2231 2231 CEMENT BRIQUETTE MOULD. Improved Standard. (Patented.) With means for separating sections automatically without rapping, according to the specifications of the American Society for Testing Materials $2.75 2232 2232 (a) 2232 CEMENT BRIQUETTE MOULD. Standard, with end clamps, accord- to specifications of the American Society for Testing Materials.$2.75 2232(a) CEMENT BRIQUETTE MOULD. Standard, with C Clamp 2.75 2232(b) Extra Clamp, C Form, to be used with No. 2232 (a) 30 2233 2233 CEMENT BRIQUETTE GANG MOULDS— Of brass. a. 2-Gang Moulds. Each, net $ 6.00 • b. 3-Gang Moulds. Each, net : • • 9.00 c. 4-Gang Moulds. Each, net • • 12.00 d. 5-Gang Moulds. Each, net • • 15.00 e. 6-Gang Moulds. Each, net • • 18.00 2233-1 CYLINDER MOULDS. Made of cast iron, with hinged clamps. Bottom plate is removable. Accurately machined to size. Can be furnished in all standard sizes. Write for prices, stating size and quantity desired. 2235 2235 CUBE MOULD, BRASS. One inch, per gang 2235(a) CUBE MOULD, BRASS. Two inch, per gang 2235(b) CUBE MOULD, IRON. Six inch, per gang (Other sizes made to order on request.) 2233-1 .$3.00 . 4.00 . 8.00 LABORATORY SUPPLIES AND CHEMICALS 91 2235(h) 2235(e) 2235(j) 2235(e) PAT MOULD (Forming Pat.) Used for forming pats of neat cement intended for steaming. . . . .• $2.50 2235(f) VICAT NEEDLE APPARATUS. Bramwell's improved form. Very convenient to determine the normal consistency and time of setting of cement. The plunger ends are of different diameter. The small needle, when not in use, can be reversed and screwed into the body of the main plunger 20.00 2235(g) EXTRA RUBBER MOULD for No. 2235f 3.00 2235(h) GILMORE NEEDLES. These needles are used for determining both the initial and the final set of the cement. They consist of two steel needles. One needle 1/12 of an inch in diameter, loaded with a weight of Y^ pound, and one needle 1/24 of an inch in diameter, loaded with a weight of one pound 6.00 2235(j) GILMORE NEEDLES. Mounted in a vertical position so that the nee- dles are perpendicular to the surface of the pat. 7.50 2235(k) 2235(k) STEAMING APPARATUS. For boiling and steaming test specimens. Size, 12x12x24 inches. Made of copper, with stand $35.00 92 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2235 (m) 2235(p) 2235 (m) 2235 (p) 2235 (q) MOIST CLOSET. Made of soapstcme. The wooden doors are covered with zinc on both sides and are held in place by iron hinges. The inside has cleats on which glass strips can be laid to hold briquette moulds. Write for prices, stating size desired. CEMENT SCALE. To show the finess of cement. This scale will weigh one pound down to 1/10000 of a pound $20.00 CEMENT SCALE. Same style as No. 2235 (p), but graduated in the metric system. Will weigh 500 grams down to 1/100 gram 20.00 2235 (t) 2235(r) 2235(v) 2235 (r) 2235 (s) 2235(a) 2235 (u) 2235 (v) SAND SCALE. For estimating the quantity of the various sizes of sand. The upper part of beam is graduated l&xl/2 ounces, the lower part of beam is graduated from 0 to 100 per cent $ 7.50 SAND SCALE. Same style as No, 2235 (r), but beam graduated in the metric system, being graduated 50 grams in 100 parts representing per cent * 7.50 MIXING TABLE. Glass Plate. Size 24x24 inches 8.00 MIXING TABLE. Slate. Size 24x24 inches 7.00 PAN, GALVANIZED IRON. For immersing briquettes in water until ready for testing. Size, 24x24x3 inches 3.50 2235 (w) 2235w CEMENT SAMPLER. With auger point to bore staves. For obtain- ing samples from center of barrel $ 7.50 LABORATORY SUPPLIES AND CHEMICALS 93 2235 (x) 2235(y) 2235(x) BRUSH. For cement briquette moulds, with brass wire and wooden handle. Brush part 5 inches long $0.75 2235(y) TROWEL. For mixing cement. Small size , 1.00 2235(z) TROWEL. Same as No. 2235(y), but larger 1.25 2235-1 2235-1 SOUNDNESS TEST APPARATUS, Le Chatelier. Very easily operated. With instructions .$3.00 SPECIFIC GRAVITY FLASK 2236 2237 (a) 2237 2236 SPECIFIC GRAVITY APPARATUS, Schumann's specific gravity bottle with tube graduated to 50 cc. in 1/10 cc $3.50 2237(b) 2236(a) SPECIFIC GRAVITY APPARATUS, Le Chatelier's. For cement. .. . . .$4.00 2237 SPECIFIC GRAVITY APPARATUS, Jackson's. Consisting oi the burette so graduated as to give direct readings in specific gravity, and the heavy Erlenmeyer flask with hollow ground glass stopper as described in R. K. Meade's Portland Cement (Page 281, 1906). The burette and flask 7.50 2237(a) EXTRA FLASK for No. 2237 Specific Gravity Apparatus 3.50 2237(b) SPECIFIC GRAVITY APPARATUS. Standard. Improved form of No. 2236 (a) . 6.00 94 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2239 Natural Size. 2244 2238 CENTRIFUGE, Purdy Electric, for examination of urine, with double urine arm carrying two tubes, two plain glass sedi- ment tubes and two graduated percentage tubes $38.40 2239 CENTRIFUGE, Purdy Electric, for examination of urine, with urine arm carrying four tubes, four plain glass sediment tubes, and four graduated percentage tubes 43.75 2240 CENTRIFUGE, Purdy Electric, same as No. 2238 with addition of Hema- tocrit arm for examination of blood and sputum 44.50 2241 CENTRIFUGE, Purdy Electric, same as No. 2239, with addition of Hema- tocrit arm for examination of blood and sputum 49.75 2242 CENTRIFUGE, Purdy Electric, same as No. 2238, with addition of Hematocrit arm and precipitating frame for concentra- tion of bacteria 50.00 2243 CENTRIFUGE, Purdy Electric, same as No. 2239, with both Hematocrit and Precipitating Arm complete for the examination of urine, blood and sputum and the manipulation of Micro-organisms 55.50 The above Centrifuges are arranged for the incandescent current of 100 to 115 volts, the price of the Centrifuge for the 220 volt current will be found on the next page. IMPORTANT. When ordering specify the voltage and current. 2244 CENTRIFUGE, "Celeritas," with urine arm, two aluminum shields, one plain glass sediment tube and one graduated glass percentage tube, complete for the sedimentation of urine $12.00 95 2249 2245 CENTRIFUGE, "Celeritas," same as No. 2244, but with Arm for holding four Tubes, with four Aluminum Shields, two gradu- ated and two plain Tubes. This machine is capable of doing the work of two ordinary centrifuges $14.50 2246 CENTRIFUGE, "Celeritas," same as No. 2244, with two Tubes for the examination of Urine and Haematocrit for the exami- nation of Blood and Sputum 15.00 2247 CENTRIFUGE, "Celeritas," same as No. 2246, with four Tubes for the ex- amination of Urine and with Hsematocrit for the examination of Blood and Sputum 20.00 2249 CENTRIFUGE, Purdy Electric, with Adjustable Speed Regulator. In order to regulate the speed of the Centrifuge more delicately than is possible with the regular device attached to the instrument and to obtain any rate of speed desired within the scope of the motor or to keep the instrument at a fixed speed where the current varies or the load is increased, a speed regulator is necessary. It is often important that an entire series of experiments should be carried on with an absolutely uniform speed. This is mostly not possible without a speed regulator, owing to the varying strength of all electric currents. Again, extremely fragile sediment must often be handled with medium speed, while very light sediments require the highest speed to produce sedimentation. The speed regulators can be supplied with any of the Purdy Centrifuges, Nos. 2238-2243 inclusive, for either the direct or alternating 60 cycle current of 100 to 115 volts at an additional cost of $9.50 THE PURDY CENTRIFUGE FOR THE 220 VOLT DIRECT CURRENT We supply the Purdy Centrifuge for the 220 volt direct current in all cases with the speed regulator. It is supplied in all combinations given under Nos. 2238-2243 inclusive, at an additional cost of $14.50 96 A. DAIGGER & COMPANY, CHICAGO, U. S. A. ol , I oil i 2252 2250 2253 2260 2272 2274 2275 CENTRIFUGE ATTACHMENTS WILL FIT ALL CENTRIFUGES Nos. 2238-2247 2250 HAEMATOCRIT, with two graduated blood tubes and two plain sputum tubes $ 6.00 2252 PRECIPITATING ARM, with two tapering tubes for the manipulation of micro-organisms • • • 6.00 2253 GOETZ TUBE, for phosphorus determination, with graduated tip '. . 1.10 2253a METAL SHIELD, for carrying No. 2253 Goetz Tube 1.20 2254 PERCENTAGE TUBE, for blood analysis, for use with Haematocrit 90 2256 PLAIN SPUTUM TUBE, for use with Haematocrit 40 2258 PRECIPITATING TUBE, with plug and six washers, for the manipula- tion of micro-organisms 75 2259 DOME PROTECTOR for Purdy Electric Centrifuges. To protect the operator from flying particles or liquid and to avoid contact with the rapidly moving arms. It also lessens the air resistance and propor- tionately increases the speed. Fits Centrifuges Nos. 2238-2243 10.75 2260 GRADUATED URINE TUBE, designed by Dr. Charles W. Purdy for use with the Purdy Electric Centrifuge, and wherever his methods are employed. This tube is fully graduated to 15 c.c., with very tapering tip for the measurement of very small quantities of sediment 60 2262 PLAIN UNGRADUATED TUBE, same size as No. 2260 20 2264 TUBE FOR MILK ANALYSIS. To obtain absolutely reliable test of either breast or cow's milk, we have devised the graduated milk tube. It will give results accurate to within 1/5 of 1% of fat 60 ALUMINUM SHIELD, to carry tubes Nos. 2260 and 2262, .90 LANCET, spear point, for pocket 1.25 DROPPER, new construction, for filling the blood tubes 30 CEMENT TUBE, with 50 c.c. graduation, with tip graduated to 1/50 c.c. for cement testing and for use where the proportion of sediment is extremely small 1.80 2275a METAL SHIELD, for carrying No. 2275 Cement Tube 1.25 2275b ARM, with two metal tube shields and two 50 c.c. cement tubes for test- ing cement and for use when the percentage of sediment to be measured is very small 12.00 2275c ARM, with two metal tube shields and two Goetz tubes for phosphorus determination with graduated tips 16.75 2275d GRADUATED TUBE. Length 4^ inches, outside diameter H inch, graduated to 10 c.c 45 2275e PLAIN TUBE, Ungraduated. Length of tube 4^ inches, outside diameter il inch 30 2275f ALUMINUM SHIELD, for carrying tubes Nos. 2275d and 2275e 10 LABORATORY SUPPLIES AND CHEMICALS 97 2275g CENTRIFUGE, Electric. This Centrifuge has been constructed for a medium size laboratory and can be depended upon for continuous service. It is furnished with a balance wheel to insure stability and has a rheostat for gradually leading up to the maximum speed of 1800 revolutions per minute under load with two 15 c. c. tubes. Height, 9^". Rotating diameter, 11^". The under side of the balance wheel is provided with four fan blades which create a steady air current passing through the windings of the motor, thus preventing over- heating. Weight, packed for shipment, 16 Ibs. Price, complete with cord and plug $32.50 2275H CENTRIFUGE, Electric- Many laboratories require a Centrifuge having four tubes and we have therefore provided our No. 19 Centrifuge with a special head for carrying four 15 c. c. tubes. Owing to the construction of the motor the additional tubes do not interfere with the speed to any marked extent. Weight, packed for shipment, 17 pounds. Price, complete with cord and plug $35.00 When ordering, please specify current on which the centrifuge is to be used. ,?35j\ 2275J 2275J CENTRIFUGE, Water Motor- Aluminum shields, four feet pressure tubing and patent hose connection included with each apparatus. CENTRIFUGE, Single arm, one each plain and graduated 15 c.c. glass tubes. . . .$12.50 CENTRIFUGE, double arm, two plain and two graduated 15 c.c. glass tubes. . .. 15.00 CENTRIFUGE, single arm, one each plain and graduated 50 c.c. glass tubes.... 15.00 CENTRIFUGE, double arm, two plain and two graduated 50 c.c. glass tubes. . . . 20.00 98 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2275k to 2275t 2275u to 2275y CENTRIFUGES, INTERNATIONAL MAKE These are High Power Electric Centrifuges mounted in a heavy bell shaped casting which furnishes at the same time a rigid base, a protective housing and a strong bearing for the motor. Ample provision is made for oiling. The lower end of the shaft of the motor runs on a ball step immersed in oil. A speed control rheostat is supplied with each centrifuge. The prices of the Centrifuges listed below do not include heads or equipment. Select the ones adapted to your needs from the list on the next page. 2275k CENTRIFUGE, Size I, Type A, 110 volts direct current, 2,400 to 3,000 r. p. m. Each, net $ 78.00 2275m CENTRIFUGE, Same, but for 220 volts, D. C. Each, net 81.50 2275n CENTRIFUGE, Size I, Type A, 110 volts alternating current, 2,000 to 3,000 r. p. m. Each, net 81.50 2275p CENTRIFUGE, Same, but for 220 volts A. C. Each, net • 85.00 2275q CENTRIFUGE, Size I, Type B, 110 volts D. C., 3,000 to 4,000 r. p. m. Each, net 102.00 2275r CENTRIFUGE, Same, but for 220 volts D. C. Each, net 105.50 2275s CENTRIFUGE, Size I, Type B, 110 volts A. C., 3,000 to 3,600 r. p. m. Each, net 116.50 2275t CENTRIFUGE, Same, but for 220 volts A. C. Each.net 116.50 THE BABCOCK CENTRIFUGES listed below are supplied with trunnion buckets, speed control rheostat, but without glassware or heater 2275u CENTRIFUGE, Babcock, Size I, 110 volts D. C. Each $ 98.50 2275v CENTRIFUGE, Babcock, Size I, 220 volts D. C. Each 102.25 2275w CENTRIFUGE, Babcock, Size I, 110 volts A. C. Each 102.25 2275x CENTRIFUGE, Babcock, Size I, 220 volts A. C. Each 106.50 2275y CENTRIFUGE ELECTRIC HEATER for above. Each 14.50 LABORATORY SUPPLIES AND CHEMICALS 99 50 c. c. and 15 c. c. Heads and Tubes EQUIPMENT FOR CENTRIFUGES Nos. 2275(k) to 2275(t) 2275-1 TWO-TUBE, 15 c. c. Head, and metal tubes. Net $ 3.60 2275-2 FOUR-TUBE, 15 c. c. Head and metal tubes. Net 8.40 2275-3 EIGHT-TUBE, 15 c. c. Head, and metal tubes. Net 14.50 2275-4 FOUR-TUBE, Combination Head, with two each metal tubes, 15 c. c., and 50 c. c. Net 8.40 2275-5 FOUR-TUBE, 50 c. c. Head, and metal tubes. Net 8.40 2275-6 EIGHT-TUBE, Combination Head, with four each metal tubes, 15 c. c., and 50 c. c. Net 15.75 2275-7 EIGHT-TUBE, 50 c. c. Head, and metal tubes. Net 14.50 2275-8 BOARD OF HEALTH HEAD, without tubes. Net 14.50 2275-9 GLASS TUBES, 15 c. c., plain. Per dozen, net, $1.76; per six dozen, net. 7.00 2275-10 GLASS TUBES, 15 c. c., graduated. Per half dozen, net 2.90 2275-11 RUBBER CULTURE CAPS, for 15 c. c. tubes. Per dozen, net 1.25 2275-12 BOARD OF HEALTH TUBES,. 2 c. c. Per hundred, net 5.75 2275-13 RUBBER STOPPERS, for Board of Health tubes. Per hundred, net 2.25 2275-14 BOARD OF HEALTH TUBES AND STOPPERS. Per set of 20, net. . 2.50 2275-15 GLASS TUBES, Lipped, 50 c. c. Per dozen, net, $1.98; per six dozen, net 7.25 We shall be pleased to quote on other sizes and styles of International Centrifuges. 2276 CHAMOIS SKINS, of best quality, according to size $0.25 to $1.00 CHLORIDE OF CALCIUM JARS, see Jars. CHLORIDE OF CALCIUM TUBES, see Tubes. 100 A, DAIGGER & COMPANY, CHICAGO, U. S. A. CLAMPS 2284-2286 2288-2290-2292 2284 CLAMP, Chaddocks', for holding beakers. Small size for beakers Nos. 0 to 2. Large size for beakers Nos. 2 to 4. . $0.30 .30 2285 CLAMP, Chaddocks', for holding evaporating dishes. Small size for dishes 3 to 4 inches 30 Medium size for dishes 4 to 6 inches 30 Large size for dishes 6 to 7 inches 30 2286 CLAMP, Chaddocks', for holding test tubes and necks of flasks 30 2288 CLAMP, Burette. The most popular burette clamp made. Jaws are made of stamped steel, japanned. With checknut to adjust to any angle 50 2290 CLAMP, Burette. Same as No. 2288, of polished brass 1.00 2292 CLAMP, Burette. Same as No. 2288, of brass, nickel plated 1.25 2294 2296 2294 CLAMP, Burette, with strong spring, closing the movable jaw $0.75 2296 CLAMP, Burette, small size, universal motion, for holding burettes or tubes in any position 75 2298 2300 2298 CLAMP, Burette, Hofmann's style, small, iron, with universal movement. . .$1.50 2300 CLAMP, Burette, Hofmann's Double, for two burettes or other tubes 2.50 LABORATORY SUPPLIES AND CHEMICALS 101 2301 2301 CLAMP, Burette, for two Burettes, designed by Prof. Lincoln. Will fit any rod up to J^-inch diameter. Burettes are held perpendicu- lar and are easily removed; very convenient and rigid ....$0.75 2301a CLAMP, Burette, for two burettes. The jaws are rubber covered, and close by means of coiled springs • 75 2301b 2301c 2301b CLAMP, Burette. Nickel plated, can be screwed into wall $0.40 2301c CLAMP, Burette. Nickel plated, for attaching to retort stands.. .50 2302 2303 2302 CLAMP, Burette, double, brass, for two burettes $2.00 2303 CLAMP, Burtte, Allihn's. For two burettes with coiled springs, closing the clamps automatically . 3.00 2304 2306 2307 PINCHCOCKS FOR RUBBER TUBING 2304 CLAMP, Pinchcock, Mohr's, for burettes, etc., strong spring. Size Small. Med. Large. Each $0.10 $0.15 $0.20 2306 CLAMP, Pinchcock, Screw, Bunsen's, for rubber tubing, with screw on each side $0.50 2307 CLAMP, Pinchcock, Lever Screw Compressors, nickel plated; in two sizes. Size Small. Large. Each r- $0>40 $0.75 102 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2308 2310 2312 2313 2308 CLAMP, Hoffman's, improved, for rubber tubing, screw can not cut the tubing, nickel plated, a screw compressor. Small size for tubing up to J^-inch $0.20 Large size, for tubing up to 54-inch 25 2310 CLAMP, Pinchcock, screw compressors, of improved construction, can be placed upon tubing without disconnecting apparatus, small 25 Large size, each 30 2312 CLAMP, Pinchcock, screw compressors, new style, small, each 20 Large, each 25 2313 CLAMP, Tubing, Chaddock's Pinchcocks. One piece of brass spring wire, no solder. A clamp for rubber tubing that can be put on and off the tubing from the side. It allows the tubing to open fully and closes upon it with a lively spring. Nickel finish. Sizes Small Medium Large Extra Large Each $0.15 $0.20 $0.25 $0.35 2316 2317 2316 2317 CLAMP, or Test Tube Holder, Stoddard's, of spring wire, 4^ inches long.. $0.15 CLAMP, or Test Tube Holder, of spring wire, nickel plated, with improved finger rests, 5 inches long 25 2318 2319 2318 CLAMP, Test Tube, wooden, of improved construction $0.20 2319 CLAMP, Flask, for large tubes and flasks, of wood with spring 75 2320 2324-2326 CLAMP, Table of iron, to fasten apparatus to table. Size, inches . . . 2 2^ 3 4 5 6 7 8 9 10 Each $0.25 $0.30 $0.40 $0.50 $0.60 $0.80 $1.00 $1.30 $1.50 $1.80 2324 CLAMP, Universal, the jaws adapting themselves to irregular shapes $1.00 2326 CLAMP, Universal, large, for very large apparatus, condensers, etc 1.25 LABORATORY SUPPLIES AND CHEMICALS 103 2327a 2327 CLAMP, Ostwald's Universal. Will take tubes up to 2 inches diameter $2.00 2327a " Bunsen's, for attaching to supports by means of clamp holder. The jaws are V shaped and rubber covered 50 2328 2328 CLAMP, Universal motion, large size, very strong for heavy tubes, jaws rubber covered • • $0.75 2330-2332 2334 2330 CLAMP HOLDER, for fastening clamps to rods of supports, small $0.25 2332 Large 40 2334 " " Universal 75 2336 2338 2338 CLAMPS FOR WATCH GLASSES 2336 CLAMPS, Watch Glass, brass, nickel plated, for two 2-inch glasses. " Watch Glass, Bunsen's form. Diameter, inches 2 2J^ Each $0.25 $0.35 CLOTH, Wire, see Gauze, Wire. COBALT GLASSES, see Plates, Glass. We are prepared to make on short notice any special Clamps, and Clampholders, which are required for special work. Price upon application. 104 A. DAIGGER & COMPANY, CHICAGO, U. S. A. COLORIMETRIC APPARATUS mm 2341a 2341b 2341c 2341d 2341f 2341J and k CARBON BATH. See Bath. 2341 CARBON DISSOLVING TUBES— Test tube form. Size, inches 6x$/8 8x1 Per dozen $0.50 $1.00 $1.00 2341a COLOR COMPARING TUBES — Eggertz', for the colorimetric estimation of carbon and manganese in steel. Capacity, c. c 25 30 50 50 100 Graduated to c. c. . , 1/10 1/10 1/5 1/10. 1/5 Per set of 2 $3.50 $4.00 $4.50 $5.00 $5.50 Per set of 4 7.00 8.00 9.00 10.00 11.00 2341b COLOR COMPARING TUBES, As above, but with ground in glass stoppers. Capacity, c. c 25 30 50 50 100 Graduated to c. c 1/10 1/10 1/5 1/10 1/5 Per set of 2 $4.50 $5.00 $5.50 $6.00 $6.50 2341c COLOR COMPARING TUBES, bent ends, designed by the late Mr. Frank Julian. By inclining the tubes the contents may be mixed without loss or necessity of placing a stopper in the tube, lower portion un- graduated. Grad. from c. c 5 to 25 5 to 30 10 to 50 10 to 50 10 to 70 Divided in c.c 1/10 1/10 1/5 1/10 1/1 Per set of 2. ... $3.50 $4.00 $4.50 $5.00 $5.50 Per set of 4 4.50 5.00 5.50 6.00 6.50 2341d COLOR COMPARING TUBES, Camp's, for determiuning manganese in steel, designed by Mr. J. M. Camp of Pittsburgh, Pa.,' per set $ 9.00 2341e COLOR COMPARING TUBES, test tube form, graduated to 1/10 c.c. Capacity, c. c 10 15 Each $0.75 $0.90 2341f HEHNER'S CYLINDERS. For the estimation of iron in water, consist- ing of two graduated glass tubes of same size and graduation, with stop-cocks and brass bases $12.00 2341h Same, without brass bases 7.50 2341J NESSLER'S JARS. For ammonia test, of clear colorless glass with polished bottoms. Graduated to c. c 50 100 50 & 100 50-100 & 150 Each .' $0.50 $0.60 $0.75 $1.00 2341k NESSLER'S JARS. Tall form, University of Illinois pattern, of clear color- less glass, with polished bottoms, with lip, 255 mm. high, graduated at 50 c. c. In sets of 12 to agree, per set $ 6.00 In sets of 6 to agree, per set 3.00 LABORATORY SUPPLIES AND CHEMICALS 105 2345 COLOR COMPARATOR OR CAMERA. Improved form, so constructed that shadows can not be thrown upon the tubes. With blue and ground glass. A superior instrument $10.00 2345a COLOR COMPARATOR. Designed by Oswald Schreiner, of the Bureau of Soils, U. S. De- partment of Agriculture. This instrument is used by the United States Government, and elimi- nates the objectionable features of some other instruments. All working parts coming in con- tact with the sample or standard, are of glass. Broken parts can at any time be easily replaced. The instrument is fully described in the "Journal of the American Chemical Society, Vol. XXVII, Sept. 9, 1905," and "Bulletin No. 31, U. S. Dept. of Agriculture, Bureau of Soils." Each, net $20.00 Extra graduated tubes for above, per pair, net 4.50 Extra plain tubes for above, per pair, net 1.00 2345a 2345C 2345b COLOR COMPARATOR. "Lovibond's Tintometer," an instrument by means of which the depth of color in liquids and solids can be accurately measured in degrees, placed in their position in a permanent color scale, and registered for reproduction at any time. It consists of a graded series of standards made of colored glasses numbered according to their depth of color, and an in- strument for holding the glasses and the object to be measured. Special pamphlet covering the instruments in every detail will be furnished upon request. No. 3a — Set of Apparatus for Brewers, Maltsters, Sugar and Caramel Manufacturers, Wine and Spirit Merchants, including the improved optical instrument, box with stand and reflector, ^2-inch and i^g-inch silvered cells, filtering apparatus, and 20 standard glasses, series 52 and 50 $62.50 Extra apparatus for estimating the color of dry malt, 33 standard glasses, with trays, presser and standard white 29.00 No. 6a — Set of Apparatus for Estimating the Color in Oils, Waxes, Lards and other Fats, Varnishes, Gelatine, etc., includ- ing the improved optical instrument, fitted with hot water ap- paratus for melting solids, with thermometer for taking their melting point, case, 1 in., y2 in. and 54 in- silvered cells, without Standard Glasses 67.50 No. 6b — Set for Estimating the Color in Cotton Seed Oil, including the improved optical instrument, fitted with lamp and hot water apparatus for liquifying the oil and maintaining a given temperature, with 5 y$ in. cell and 36 Standard Glasses 95.00 Standard Colored Glasses, each 90 Standard Glasses, if ordered without apparatus and in even numbers, or out of sequence of the fractional intervals in sets. Each 1.35 COLOR COMPARATOR. Lovibond Tintometer. Simple Form, for for estimating the color in cotton seed oil, fitted with standard oil sample bottle and compound standard glass (yellow 35 4- red 7.1). Complete 10.00 Set of 24 Standard Glasses for above.. . 24.00 2345 106 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2347 2347a 2347 COLORIMETER, Kennicott-Sargent. It is especially recommended on account of the rapidity of operation while maintain- ing the highest standard of efficiency possible with the color method. The standard and unknown solu- tions come in contact with glass only. The apparatus consists of a wooden camera which exhibits on a dark background the pictures of the sample and the stand- ard side by side in the form of two large round discs of color by means of light transmitted through the sample and standard by means of swinging mirrors. The body of the camera is of the correct shape and focal length, enabling the observer to place his face close to the mouth of the instrument whereby all side lights and distracting rays are eliminated. The glass parts consist of a tubular reservoir provided with a glass plunger. From the bottom of a graduated glass chamber there extends a glass tube connected with the bottom of the reservoir, also a corresponding tube for the unknown solution to be tested. The complete apparatus as illustrated $20.00 Extra graduated cylinders, each 2.00 Extra graduated cylinder with leveling system attached 4.00 2347a COLORIMETER, Kennicott-Sargent's, modified by Campbell- Hurley. In this colorimeter the method of comparing the colors is similar to that used in a half shade polariscppe, the field consisting of a circular disc of light divided vertically into two parts. The comparison tubes are those of the well-known Kennicott-Sargent instru- ment in which the unknown is placed in the left hand tube while the color is matched by raising or lower- ing the level of a standard solution in the right hand tube by means of a glass plunger working in the attached reservoir. A person looking through the eye piece observes a single field divided vertically by an almost im- perceptible line representing the contact point of the hemispheres of the two comparison tubes. Complete Prices of separate parts see No. 2347. 20.00 LABORATORY SUPPLIES AND CHEMICALS 107 HESS-IVES TINT PHOTOMETER 2347b 2347e The Ives' Tint Photometer is an instrument for comparing different shades and hues of light colored materials or liquids with each other and with fixed standards, in order to differentiate and classify them, and give them numerical expression. It is adapted particularly, and far better than any other existing means or device, to tests of paper-pulps, different hues and grades of white and tinted paper, transparency of waxed and similar papers, color of oils and other liquids, qualities of flour as shown in prepared baked samples, white pigments in oil or turpentine, cottonseed meal, etc., etc. The Ives' Tint Photometer is used like a telescope, presenting to the eye a circular field with vertical hairline central division, one side of which is filled through a slit with light directly from a standard white magnesia block, while the other is filled through another slit with light from the sample to be compared, measured and given numerical expression. The slits are adjustable, with a reading-scale, and the light coming through them is spread evenly across the respective half fields by means of a patent revolving optical mixing-wheel between the slits and the field lens. Especial attention is called to the fact that personal color equation and even a marked degree of color blindness do not affect the readings obtained with the Tint Photometer. In order to assure definite and constant illumination of standard and sample a "daylight" lamp must be employed. For other special purposes, such as measuring the transparency of waxed and similar papers and substances, or light colored liquids in long tubes, special fronts are provided, at an additional cost of from $5 up. PRICES 2347b HESS-IVES TINT PHOTOMETER, complete as illustrated $175.00 2347c DAYLIGHT LAMP, as shown in 2347e 20.00 (State voltage when ordering.) 2347d CABINET, as shown in 2347e 60.00 2347e HESS-IVES TINT PHOTOMETER with daylight lamp and cabinet... 275.00 108 A. DAIGGER & COMPANY, CHICAGO, U. S. A. Iron in blood Iron in urine Cholesterin in blood Glucose in urine Indican in urine Sugar of milk in urine Sugar of milk in milk and many other tests 2348 Colorimeter according to DUBOSCQ. The application of this colorimeter is most uni- versal and it is found in use in medical, biological, commercial and industrial laboratories for tests or an extended variety, some of which are: Sugar factories, for measuring the decolorizing power of animal carbon. Steel works, for measuring combined carbon in steel. Dye works, for comparing coloring material. Wine growers, for comparing the coloration of cut wines. Distilleries, for examining the coloration of syrups, brandies, etc. Other commercial laboratories, for testing mineral oils or any substance permitting a comparison of color or intensity. Medical and biological laboratories, for the following tests: Hemoglobin in blood Sugar in blood Phenolsulphonephtalein Uric acid in blood Uric acid in urine Creatin in blood Creatin in urine Creatinin in blood Creatinin in urine Metereological observatories, for measuring the am- moniacal nitrogen in the air. Water laboratories, for Ammonia test in water Nitric acid test in water Sulfuretted Hydrogen test in Lead test in water water Nitrous acid test in water Chlorine test in water Iron test in water "Duboscq" Colorimeter with glass cylinders 10 cm. high, complete $120.00 Extra Parts: Glass cylinder, 10 cm. high 3.50 Glass plunger, 10 cm. high . . 7.50 2348 2348A Nephelometer Attachment for the "Duboscq-Leitz" Colorimeter, con-" sisting of: 1 Light-proof housing "S," enclosing the light and illuminating lenses. 1 Light-proof housing "T," enclosing the nephelom- eter attachments. 1 Curtain "U" to prevent the entering of light from the rear of the instrument. Complete $42.00 2348B Ditto, but adjusted to suit the original "Duboscq" Colorimeter with 10 cm. tubes, of which the glass cylinders move by rack and pinion. Complete 48.00 2348C Colorimeter — Petroleum. For determining color of Engine, Machinery and Cylinder Oils according to The National Petroleum Association Standards, by comparison with standard color glasses as follows: ~A — Cylinder Oil, Extra Light Filtered D — Cylinder Oil, Light Filtered E — Cylinder Oil, Medium Filtered G— Lily White N. P.'A. No. 1 H— Cream White. .N. P. A. No. lf/2 I — Extra Pale N. P. A. No. 2 J — Extra Lemon Pale C — Lemon Pale N. P. A. No. 3 L — Extra Orange Pale M— Orange Pale. . . N. P. A. No. 4 N— Pale O— Light Red N. P. A. No. 5 P— Dark Red N. P. A. No. 6 O— Claret Red METHOD OF DETERMINING Lubricating Oils. The color of Lubricating Oils is determined by placing a 4-oz. bottle of oil under examination in one of the circular compartments of the instrument. In he opposite compartment place a l-oz. bottle of Water White Gaso- line or Distilled Water. Then place one of the standard glasses in the slot, and close the slide. The instru- ment should be taken to a window, where the observer, looking through, can compare the color of the oil with the standard glass. Filtered Cylinder Oils. To determine the color of Filtered Cylinder Oils they must first be mixed with Water White Gasoline in the proportions of 15% Oil and 85% Gasoline. Then proceed as described for determining color of Neutral Oils. 2 Metal screw caps "M," to hold the test tubes 2 Glass Test Tubes "N." 2 Screw Sockets "O," to hold metal cups 2 Metal Cups "P." 1 Source of light "Q" with illuminating lenses. R, R. 2348C LABORATORY SUPPLIES AND CHEMICALS 109 2349 2349 COMBUSTION APPARATUS, Vanier's, Electrical, for the direct combus- tion of carbon in steel, with special glass parts designed by Mr. Geo. P. Vanier of the Pennsylvania Steel Co. A. The Electrical Furnace, Hoskins Type, for either 110 or 220 volts direct or alternating currents, for temperatures not to exceed 1,000° C. The energy consumed is 6 am- peres for 110 volts. The tube chamber is 12 inches long and 1% inches in diameter. Other sizes can be supplied to order. Complete with a six foot connection cord and with plug for ordinary Edison lamp socket ............................. $25.00 IN ORDERING, STATE VOLTAGE DESIRED Rheostat for above ........................................ 8.50 Repair Parts for furnace: Alundum tube ......................................... 2.10 Alundum tube, wound with wire ........................ 7.00 B. Ordinary Potash Bulb ................................... 75 C. Glass Stoppered Calc. Chloride Tube, 4 inches long ...... 2.00 D. Quartz Combustion Tube, 24x% inch .................... 5.00 E. Special Zinc Tube ....................................... 75 F. Vanier's Sulphuric Acid Bulb ........................... 1.25 G. Vanier's Combined Potash Bulb and Drying Tube (Patented) .............. ............................. 10.00 H. The complete Combustion Apparatus, as illustrated, with furnace and Rheostat, supports, clamps, rods, beakers, tubing, etc., but without oxygen tank ................... 50.00 r.o O>YGEN 2349-1 2349-1 COMBUSTION APPARATUS, Fleming, complete as illustrated, with Hoskins Type FD 302 Electric Combustion Furnace, rub- ber stoppers, glass and rubber connections; without oxygen tank and pressure gauge $25.00 Rheostat for regulating temperature of furnace 8.50 When ordering state voltage of current available. Separate Parts: K. Mercury Pressure Gauge 1.75 P. Washing Bottle 1.25 T. Calcium Chloride Jar 1.25 G. Mercury Valve • • 75 S. Silica Tube 30 inches long, % inch inside diameter 5.75 F. Hoskins' Electric Combustion Furnace, Type FD-302... 25.00 Z. Zinc Jar 75 C. Stopcock 1.50 O. Phosphoric Anhydride Jar 2.50 W. Fleming Absorption Tube 5.00 Pi. Washing Bottle 1.25 110 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2349-2 2349-2 COMBUSTION APPARATUS, Johnson's, Electrical, for the determina- tion of carbon in iron, steel, ferro alloys and plumbago. Designed by Mr. C. M. Johnson of the Park Steel Works of the Crucible Steel Co. of America. A. The Electrical Furnace, Hoskins' Type F. D. 302, for either 110 or 220 volts direct or alternating current, for temperatures not to exceed 1000° C. The energy con- sumed is 6 amperes for 110 volts. The tube chamber is 12 inches long and 1% inch in diameter. Complete, with a six foot connecting cord and with plug for ordi- nary Edison lamp socket $25.00 IN ORDERING, STATE VOLTAGE AVAILABLE Rheostat for above 8.50 Repair parts for furnace: Alundum tube 2.10 Alundum tube, wound with wire 7.00 B. Jar, for Potassium Hydroxide, stick form, or for any solid dryer or absorbent 1.00 C. Jar for Potassium Hydroxide Solution 1.50 D. Calcium Chloride Jar 2.00 E. Soda Lime Jar 2.00 F. Mercury Safety Valve 75 G. Mercury Pressure Indicator, for detection of leaks.... 1.00 H. Jar for Granular Zinc 80 I. Jar for Phosphoric Anhydride 75 J. Absorbing and weighing Apparatus for COa 1.50 K. Quartz Combustion Tube, 24x$4 inch 5.00 The complete Combustion Apparatus, as illustrated, with Rheostat, but without oxygen tank 55.00 "Rapid Methods for the Chemical Analysis of Special Steels. Steel making alloys and Graphite" by C. M. Johnson, describing the above determination 3.00 2351 2351a 2351 COMBUSTION CAPSULES, porcelain. Diameter, mm 40 50 Height, mm 22 30 Each $0.20 $0.25 2351a COMBUSTION CAPSULES, Fused Silica, especially adapted for ash determina- tions, ignitions, etc. Diameter, inches 1^ 1J4 2 2^ Each $0.60 $0.60 $0.90 $1.00 COMBUSTION BOATS, see Boats. COMBUSTION Furnaces, see Furnaces. COMBUSTION Tubes, see Tubes. LABORATORY SUPPLIES AND CHEMICALS CONDENSERS 2352 2353 2356 2358 2360 In ordering glass condensers please state whether the side tubes are desired both on one side, or on opposite sides of the water jacket. 2352 CONDENSER, Allihn's, all glass. Size, inches 8 10 12 15 20 25 Each $1.20 $1.35 $1.50 $1.75 $2.25 $2.75 2353 CONDENSER, Hallock's, of copper with block tin coil, 14J^ inches long, 4 inches diameter, with 2 rods for attaching to support. . .$7.50 2356 CONDENSER, Ball form, copper nickel plated, each 5.00 2358 CONDENSER, Hopkins'. After design by Prof. C. G. Hopkins. Made entirely of glass, and consists of a thin glass water tube, 25 mm. outside diameter and 250 mm. long, provided with inlet and outlet tubes, the former reaching to near the bottom of the water tube. The water tube is sealed into a stronger outer tube having side neck and its lower end ground to point. In use the outer tube is not cooled to a temperature at which atmospheric moisture will condense upon it, wherein lies the chief advantage of this condenser over ordinary forms in fat extraction with anhydrous ether. May also be used for ordinary distilla- tion by passing the vapor through the side tube. Total length, 350 mm. Each 2.50 2360 CONDENSER, Kennicott's, all glass, specially designed for water analysis and adapted for use with a 32 oz. retort. Used by Chi- cago Health Department 3.00 2362 2364 2362 CONDENSER, Liebig's, of glass, with rubber connection, with adapter sealed on to condensing tube if desired. Length of glass body, inches. 10 12 15 20 24 30 Each $0.85 $1.00 $1.10 $1.25 $1.90 $2.00 2364 CONDENSER, Liebig's, made entirely of glass, with the condensing tube sealed in the glass jacket. Length of glass body, inches 8 10 12 15 20 Each $0.70 $0.90 $1.10 $1.25 $1.90 Our Glass Blowing Department is equipped to make special types of all Glass (plain, spiral and Bulb) condensers, as well as all types of distillation and extraction tubes and flasks. Also all apparatus requiring graduations, grindings, etc. 112 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2365 2366 2365 CONDENSER, Liebig's, but with adapter fused to condenser tube. Length of jacket, inches 10 12 15 20 Each $1.10 1.30 1.50 2.20 2366 CONDENSER, Liebig's, made entirely of glass, but with the condensing tube in the form, of a coil sealed into the water jacket. Length of glass body, inches. 8 10 12 15 20 25 Each $2.00 2.25 2.50 3.00 3.75 4.50 2367 2367 CONDENSER, Brass Jacket, fitted with glass condensing tube and rubber stopper. Length of jacket, inches 15 20 27 30 Each $3.75 4.25 4.75 5.50 2372 2376 2372 CONDENSER, Sulphurous acid, with two stopcocks in vertical limbs, each. $4.50 2376 CONDENSER, Sulphurous acid, with two stopcocks in horizontal limbs, each 4..50 2377 2377a 2378 2380 2377 CONDENSER for Extraction Apparatus, Underwriters' Laboratories type. For the determination of extractable constituents of rubber insula- tion on wire, etc. 2377a CONDENSER, Wiley's, of copper, nickel plated, well tinned inside. 2378 CONDENSER, Worm Condenser inside a cylindrical glass water jacket. Size Pint. Quart. y2 Gal. Each : $2.50 3.50 5.00 2380 CONDENSER, Worm Condenser, heavy block tin worm inside a zinc water jacket. Capacity of still, gallons y2 1 2 3 5 Each $3.00 4.00 4.50 5.00 6.00 - CONDENSER TUBES, see Tubes. LABORATORY SUPPLIES AND CHEMICALS 113 2384 CONES of Platinum, see under Platinum. 2384 CORKS, XX quality, regular length. No 1 2 3 4 5 6 78 9 10 11 12 Dia. large end, in ft Yz ft Y% \k 24 il 7A & 1 1ft 1/4 Per gross $0.20 .20 .25 .30 .40 .45 .55 .70 .80 1.00 1.10 1.20 No 13 14 15 16 17 18 19 20 22 24 26 Dia. large end, in... 1ft 1^4 1ft 13A 1ft l/^ 1ft lH 124 17A 2 Per gross $1.30 1.40 1.60 1.90 2.20 2.50 2.70 3.00 3.50 4.20 4.50 2386 CORKS, XXX quality, regular length, cut from selected wood. No 1 Dia. large end, inches... ft Per gross $0.35 No - 11 Diam. large end, inches., l-fa 2 3 4 5 6 T/Z ft ft » 24 .38 .40 .45 .60 .70 12 13 14 15 16 1/4 1ft 154 1ft I2i 8 9 10 .85 1.00 1.20 1.50 17 18 19 20 1ft If* 2388 Per gross $1.60 1.70 1.90 2.10 2.40 3.00 3.40 3.70 4.00 4.60 CORKS, XX quality, short length, for wide mouth bottles, diameter same as above. No 1 2 3 4 5 6 7 8 9 10 11 12 Per gross $0.18 .18 .20 .24 .30 .35 .45 .50 .60 .80 .901.00 No 13 14 15 16 17 18 19 20 22 24 26 Per gross $1.15 1.25 1.40 1.50 1.70 1.90 2.00 2.30 2.70 3.00 3.80 2392 CORKS, Flat, so-called specie corks, y2 to 54-inch long. Diameter, large end, inches. .. 2 2^ 2J4 %H 21A %5A 224 %7A 3 Per dozen $0.15 .18 .20 .25 .25 .30 .30 .35 .40 Diameter, large end, inches 3J4 %1A 324 4 4J4 5 5J4 6 Per dozen $0.50 .60 .70 .901.201.501.802.25 2393 CORK BORING MACHINE. For attaching to table. For boring holes of various sizes in corks and rubber stoppers. Complete with set of eight borers and special device for holding same when not in use $15.00 114 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2395 2395 CORK BORERS. Of hard drawn brass tubing, nicely finished, each borer is supplied with a handle. In sets of.. 3 6 9 12 15 Sizes from 1 to 3 1 to 6 1 to 9 1 to 12 1 to 15 Per set $1.00 2.00 3.00 4.50 6.00 2396 2396 CORK BORERS, of polished brass, mandrel-drawn tubing. In sets of Ito3 1 to 6 1 to 9 1 to 12 1 to 15 Per set $0.90 1.75 2.75 4.25 5.75 2398 2400 2398 CORK BORER SHARPENER, a metal cone with a steel knife '. . .$1.50 CORK FILES, see Files. 2400 CORK KNIFE . .25 2404 2408 2404 CORK PRESS, improved wheel form. Small, $1.00; large $1.50 2408 CORKSCREW, with wooden handle 25 COVER GLASSES for Microscopical Preparations, see Glass Covers. Our Industrial Chemical Department is in a position to furnish HEAVY CHEMICALS in quantities from 1 oz. to Carloads. We specialize in Caustic Soda, Soda Ash, Caustic Potash, Benzol, Toluol and Coal Tar Products. LABORATORY SUPPLIES AND CHEMICALS 115 CRUCIBLES 2412 2412 CRUCIBLES, Annealing Cups, for gold. No .................................. 0 Size, inches ......................... IMjxl Per dozen ......................... $1.25 Covers, dozen ...................... .30 $1.50 .40 $1.80 .50 2420 2420 CRUCIBLES, Black Lead, genuine Dixon's. No .............. 02-03-0 Height, in ........ 22-^2^ Diani., in ......... V/2 1% 4-0 3 .60 .60 .75 Each ............. $0.60 Covers, each No ............. 7 8 10 12 14 16 Height, in ...... 6^4 7% 8 8 8^' 8?4 Diam., in ........ 5^ 5% 6 6% &V4 7 Each ...... .- ____ $1.95 2.10 2.40 2.50 3.00 3.40 3.75 Covers, each ..... 75 .75 .75 .75 .75 .75 .90 No ............ 45 40 Height, in ..... 11% 12^ Diam., in ...... 9# 9J4 Each ......... $7.4") 8.40 Covers, each . . . 2.00 2.40 1 2 3 4 5 6 3% 4^ 5% 5S/& 6 6^ 3^ 3^ 4% 4^ 4% 5% .90 1.05 1.20 1.35 1.65 1.80 40 .40 .40 .40 .40 45 13 18 9}£ 70 20 25 .60 30 11 7% 88^ 4.20 5.25 6.25 1.20 1.50 1.50 80. 90 100 15^ 15^ 16 50 60 13^ 14 9^ 10^ 10^ 10% 9.45 10.50 12.50 13.70 16.80 18.90 21.00 2.70 3.00 3.50 4.20 4.75 5.40 6.00 2421 116 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2421 2424-2428 CRUCIBLES, Clay. These crucibles are niade in both hard and soft burn. Capacity, grm 5 10 12 15 Height, inches 2$g 3 &A 3T/2 Dia. at top, inches.. 2$i %5A ^ %7/& Per 100 $2.50 3.00 3.00 3.00 Covers for above. Per 100 L $2.25 2.25 2.25 2.25, 20 30 35 40 3 4.00 3/2 6.00 6.00 8.00 3.50 4.00 4.00 5.00 2424 CRUCIBLES, American made. High form; for gasoline or open furnace work. 2428 Dixon's Assay (Sand) Crucibles ^ Height Diam. No. A B C D E F G H J K L M N O P Q Inches 2% 4% 5 5% 5% 8 * 8% 9% 10 11 12 I J K L N O Q 6 654 7J4 8 9J4 10 13 4 434 4^ 5^4 6^ 7^ 9 Per 100 . .". . $3.50 5.50 6.00 8.00 10.00 12.00 15.00 30.00 50.00 60.00 150.00 Covers for above. 3.50 4.00 5.00 5.50 6.00 8.75 8.75 Covers for Dixon's Assay (Sand) Crucibles Number ...Dor 6 E Height, in.. 4 4^ 5 Dia. at top. . 2}4 33^ Per 100 $2.25 Inches Per 100 Per Doz. 1% $ 2.75 $ 0.40 1 % 3.25 .50 2% 3.5O .60 2% 4.0O .70 2% 6.00 .80 3 6.50 .90 3% 8.5O 1.35 3% 15.OO 2.00 4% 2O.OO 2.5O 4% 22.00 3.OO 5% 32.OO 4.20 5% 4O.OO 5.40 ey2 55.OO 7.20 7 SO. 00 1O.2O 7% 110.00 14.2O 8% 175.0O 22.00 F. O. B. New York Bach $0.10 .10 .10 .10 .10 .10 .15 .20 .25 .30 .40 .50 .65 .90 1.25 2.0O Size A B C D E F G H J K L, M N O P Q Per 100 2.50 3.00 3.25 3.5O 4.0O 5.0O 6.00 7.0O 7.50 10.00 10.5O 11.00 12.OO 1I5.OO 14.00 15.00 F. O. B. Per Doz. SfSO.50 .50 .50 . .50 .60 .70 .80 1.00 1.1O 1.4O 1.50 1.8O 2.20 2.5O 2.70 3.0O New York Each $0.05 .05 .05 .05 .08 .10 .10 .12 .12 .15 " .16 .18 .20 .25 .30 .35 2429 2429a 2429 CRUCIBLES, Alundum Melting, most refractory, well adapted to experimental electric furnace work, however, not suitable for use where slags are encountered, on account of their absorbent nature. No ...... * ............. 5922 6820 5144 5923 Diameter, inches ................. VA ^A 3 lH Height, inches . . . : ............... 2 2$/s &A 3*4 Each . ........................... $0.75 1.00 1.25 1.50 2429a CRUCIBLES, Hessian Sand, triangular, in nests. No. in Nest ........................................ Height of largest, inches ............................ 4 Width on top, inches ............. . ................. Nest ...... . ...................................... $°-30 6608 2.00 4 J/z $°-50 LABORATORY SUPPLIES AND CHEMICALS 117 2430-2448 2440 2442 2444 2430 CRUCIBLES, Copper, with covers. Capacity, cc ....... ............ 30 50 100 200 500 Diameter, inches .............. lH *M %3A 3 4 Height, inches . .' .............. ' 1& 2 2^ 3^$ 3f£ Each .......................... $0.60 .70 .90 1.20 2.00 2440 CRUCIBLES, Gooch Form, glazed throughout except outside bottom surface. Perforations about yz mm. in diameter, without covers. No ............................... , ..... 2 2a 3 4 Capacity, cc ............................ 10 20 25 35 Diameter at top, mm . .................. 27 33 35 40 Diameter at bottom, mm ............... 18 20 22 25 Height, mm ............................ 30 33 40 43 Each ................................... $0.30 .35 .40 .45 CRUCIBLES, Cast iron, with covers. Capacity, pints Each 2444 CRUCIBLES, Light Sheet Iron, with covers. Capacity, cc Diameter, inches . . Height, inches Each 2448 CRUCIBLES, Nickel, with covers. Diameter, mm .............. 35 Height, mm ................ 32 Capacity, cc ................ 20 Each ....................... $0.60 2448a CRUCIBLES, As above, without covers. Each ..... , ................. $0.40 l/2 1 2 4 8 $2.00 2.25 2.50 3.00 4.50 20 30 50 100 200 400 V/2 lY4 2 2^ 3J4 3# 1# 1& l^g 22^ 3 $0.20 .25 .30 .35 .40 .70 40 45 50 60 80 100 35 40 45 55 70 85 30 50 75 100 250 500 .70 .8$ 1.00 1.20 2.00 3.00 .45 .50 .65 .80 1.60 2,50 2449 2451 2451a 2449 CRUCIBLES, Nickel, Kawin's, made of heavy pure nickel, and used in a muffle for burning off filter paper in silicon determinations in iron, 28 mm. diameter by 15 mm. high. Per dozen $3.00 Each 30 2451 CRUCIBLES, Gooch, \vith two holes for suspending in Extraction Appa- ratus. Size number 3; diameter rim 35 mm.; capacity 25 cc. Each * 50 2451a CRUCIBLES, Caldwell's Form, Coors Porcelain, with removable perforated plate to fit m bottom. Size No. 4; capacity 25cc. Without cover 60 2451b COVER only for No. 2451a >10 2451C PERFORATED DISC only for No. 2451a .25 CRUCIBLES, Platinum. See under Platinum. 118 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2452 2452 CRUCIBLES, Rose's, of unglazed porcelain, with perforated cover and delivery tube. — Complete — Capacity, cc 15 30 60 Each , $1.00 1.25 1.50 2452a COVERS only of No. 2452. For crucible of capacity, cc 15 30 60 Each $0.10 .15 .20 2452b CRUCIBLES only of No. 2452. Capacity, cc 15 30 60 Each $0.20 .30 .40 2452c DELIVERY TUBE only, with flange, of No. 2452. For crucible of capacity, cc 15 30 60 Each $0.70 .80 .90 2453 CRUCIBLES, Gooch, for Bitumen in Asphalt, Coors Porcelain, with 'large filtering surface. Height, 24 mm.; width at top, 45 mm.; width at bottom, 35 mm $0.50 2455 2457 2455 CRUCIBLES, Coors Porcelain, high form, glazed throughout, without covers. No 000 00 0 1 2 3 4 Capacity, cc 5 10 15 30 57 95 155 Diameter at top, mm.. 26 30 35 41 52 62 72 Height, mm 19 25 27 35 43 50 59 Each $0.09 .12 .15 .24 .30 .35 .45 2455a COVERS for Crucibles No. 2455. No 000 00 0 1 2 3 4 Diameter, mm 32 35 42 47 59 73 81 Each $0.05 .05 .05 .07 .09 .12 .12 5 280 87 72 .55 5 95 .15 2457 CRUCIBLES, Coors Porcelain, wide form, glazed throughout, without covers. No 000 00 0 1 2 3 4 Capacity, cc 8 12 17 30 50 90 145 Diameter at top, mm.. . 32 37 41 46 56 67 81 Height, mm 19 21 25 29 36 44 52 Each $0.12 .15 .18 .25 .34 .43 .50 2457a COVERS for Crucibles No. 2457. No 000 00 0 1 2 3 4 Diameter, mm 39 44 47 52 65 76 88 Each $0.05 .05 .07 .07 .08 .12 .15 5 265 96 65 .62 5 107 .18 LABORATORY SUPPLIES AND CHEMICALS 119 2459 2459b 2459 CRUCIBLES, Alundum, for high temperature work, especially suited to coal analysis drying of materials, igniting of niters and other general laboratory work. No 5202 5203 7040 Diameter, inches 1/4 l?i 154 Height, inches lA lM I1/* Capacity, cc 20 40 25 Each $0.30 .35 .35 2459a CRUCIBLES, Covers for above. Each $0.30 .35 .35 2459b CRUCIBLES, Alundum, Porous, for filtering, especially adapted to routine lab- oratory work where suction is available, because of the rapidity with which filterations can be made. They will hold the finest precipitates and may be cleansed by heating over a Bunsen burner. No 5204 5205 Diameter, inches 1^1$ 1$4 Height, inches 1^ lii Capacity, cc 25 35 Each $0.30 .35 Above are supplied in three degrees of porosity, RA.84 dense; RA360 medium; RA98 porous. If no degree of porosity is specified, RA98 will be sent. 2459C 2459a . 2459c CRUCIBLES, Fused Silica, low form, unaffected by sudden and extreme changes of temperature, not attacked bj acids except hydrofluoric. No 0 1 2 3 Diameter, about mm 41 47 57 67 Height, about mm 25 28 37 45 Each $0.60 .75 .90 1.25 2459d CRUCIBLE COVERS, Fused Silica, for above. Each $0.50 .60 .75 .90 2459e CRUCIBLES, Fused Silica, tall style, shape of platinum crucibles. No 4 5 6 Diameter, about mm 50 35 43 Height, about mm 50 35 38 Each $1.25 $1.25 $1.25 2459f CRUCIBLE COVERS, Fused Silica, for above. Each $0.60 .60 .60 2460 CRUCIBLES, Silver, pure silver, with covers. Capacity, cc 20 30 50 75 100 150 Approx. weight, grams 35 45 60 80 100 150 Each $3.25 3.75 5.25 7.00 8.50 12.00 120 A. DA1GGER & COMPANY, CHICAGO, U. S. A. 2462 2465 2462 CRUCIBLES, Skidmore's Crucible and Retort combined. This is a new design of spun iron crucible for the individual use of the laboratory student or for general experimenting. It may be used equally well as an open crucible, a closed crucible, or a retort; and being of thin metal, is easily brought to a red heat in the flame of an ordinary burner. Each $1.50 2462(a) CRUCIBLES, Extra bowls for same, each 50 2464 CRUCIBLES, Large 2.50 2465 CRUCIBLES, Pennock and Martin's, made of pure sheet nickel, with lid perforated with small hole for insertion of igniting wire, for th'e rapid and accurate determination of sulphur in coke and coal. Capacity 40 cc., size ll/2 inches diameter, 1^4 inches high 3.50 2465a 2465b 2465a CRUCIBLE HOLDER, Sargent's, for filtering crucibles. The simplest apparatus for the purpose on the mar- ket. It is of special value where the unob- structed use of the entire sides and bottoms of porous filters is desired, as it grasps only about one-eighth of an inch of the upper rim of the crucible. Can be instantly installed or removed for cleaning. Will fit any ordinary sixty degree funnel. Can be used with any crucible on the 2465c market, such as Gooch, Caldwell or porous Alundum styles. Made of one piece of soft rub- ber in three sizes only. Size No 1 2 3 For crucibles, top diam. mm 27 35 40 Each $0.30 .35 .40 2465b CRUCIBLE HOLDER, Sargent's, replaceable flange type. Has all the good points of No. 2465(a) and in addition has the advantage of greater ease of manipulation as well as provision for the easy replacement of the soft flanges when desired. Made of hard rubber with pure gum flanges. Can be made to order in any size. Size No 1 2 3 For Crucibles, top diameter, mm 27 35 40 Each $1.50 1.50 1.50 2465c CRUCIBLE HOLDER, Celeritas. For quick and easy manipulation this Gooch Crucible Holder cannot be equalled. Hot acid solu- tions can be filtered without danger of contamination, as the rubber plug is completely lined inside with a bell-shaped g-lass covering. The taper of the plug is so designed as to fit flasks of various sized necks. One complete holder will take the place of the usual carbon tube, rubber stopper and tubing. Each, complete, but without crucible $0.50 LABORATORY SUPPLIES AND CHEMICALS 121 CRUSHERS Ready for use. Opened for cleaning. 2466 NO. 1 OR SMALL CASE CRUSHER, HAND AND POWER 2466 CRUSHER, Case. The Case Improved Laboratory Crusher is designed to meet the constantly increasing demand for a strong Laboratory Ore Crusher with greater capacity than any other similar Crusher. We unhesitatingly recommend it as being the strongest, fastest and best Laboratory Crusher ever built. The above cuts represent in detail the Combination Hand and Power Machine, which has the essential features of strength and speed, and, at the same time, requires the least power of any Crusher, for work accomplished, on the market. This Crusher is the most easily cleaned Crusher manufactured. It can be so thor- oughly cleaned that there is no possibility of salting. The simple turning of a large hand nut loosens the stationary jaw, which may be removed and brushed off. This large hand nut serves a double purpose — it is sufficiently large so that it gives great leverage and the jaw does not work loose when the Crusher is in motion. The movable jaw is provided with loop handle cast on top, by which the jaw is lifted out of the socket for cleaning. Another special feature with reference to the jaws is that both are pivoted from a center, so that when one end becomes worn it may be reversed and you receive double wear from the Crusher plates. The Case Crusher is shipped with three replaceable shims or liners which fit be- tween the stationary jaw and the Crusher frame. By inserting these shims, your prod- uct may be ground to any fineness. This machine is lubricated by means of grease cups in place of the old method of using oil, which means that it will run for days with very little attention. The capacity of the Crusher of this character depends on the nature of the product to be crushed. This machine will take rock or soft substances 2l/2" in diameter re- ducing so that same will pass through a 10 mesh sieve or finer at the rate of from 50 to 150 pounds per hour. The shaft is 1^2" in diameter, driven by a 9" pulley with a 2^4" face, at from 450 to 500 revolutions per minute, and requires 1 H. P. for general use. Opening of jaws, All parts of this machine are made on jigs in exact duplicate, consequently replace- ments can be had at minimum expense. In other words, the Case Crusher is a thor- oughly standardized machine. Floor or bench space required for small size: 14j4"x21". Net weight: 140 Ibs. Shipping weight: 165 Ibs. Kindly compare all of the above good Crusher features when in the market for a Crusher and make no mistake. Price, f. o. b. Factory ........ . ............................................. $50.00 While it is impossible to list all types of Jaw Crushers, Grinders, etc., in the limited space allotted to these machines, we are listing the representative ones for Crushing, Grinding and Pulverizing. We can furnish any special or ordinary type of Crusher or Grinder of various capacities, either hand or power driven. A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2467 LARGE SIZE LABORATORY CRUSHER, POWER ONLY 2467 CRUSHER, Case, large size for power only. In construction, it is an exact duplicate of the smaller Crusher, having all the essential fea- tures, but is designed for greater capacity and heavier work — for such samples as are required by large mills and smelters. This machine, like the smaller, is easily cleaned by removing the stationary jaw and lifting the movable jaw by handle cast at the top for this purpose. For machine of this size, we recommend a 2-horse power motor and a speed of 400 revolu- tions per minute. The shaft is lli inches, driven by a 14 inch diameter pulley with 4 inch face. Loose pulley made slightly smaller so as to take strain off the Crusher bearing and shafting when not in use. The Crusher jaws are 10^4x4^ inch face. Jaw opening: 3J4x4j4 inch. Floor space: 27x28 inch. Net weight, 540 Ibs. Shipping weight: 660 Ibs. Price, f. o. b. Factory. . .• $100.00 2468 2468 CRUSHER Plate and Rubber, so-called Bucking Board, of chilled iron, for quickly reducing ores to a fine powder. Improved pattern, with plate 18x24 inches, and a muller either 8x4 inches or 8x7 inches, as desired. Without the wooden bench 10.00 2470 CRUSHER Plate and Rubber, as above, 84x36 inches 15.00 2472 CRUSHER Extra large size rubber, weighing about 70 Ibs. for above plates 4.00 LABORATORY SUPPLIES AND CHEMICALS 123 2474 2474 CRUSHERS, Taylor's Hand Crusher, a low priced machine, substantially made, for reducing ore, coal, etc., to a fine powder. The jaws are 3 inches wide and open at the top 1^4 inches. Forty pounds of the hardest rock may be crushed in one hour, 20 per cent of this will pass a 60-mesh sieve. By tightening the adjustment and crushing again, it will all pass a 60-mesh or finer sieve. Weight, 100 pounds, packed for shipment $18.00 2475 THE CASE IMPROVED PULVERIZER Open for Cleaning 2475 PULVERIZER, Case. Capacity — The capacity of the Case Grinder depends on the hardness of the ore and the size of the ore fed through the Hopper and the fineness to which it is ground. In actual tests, we find the machine capable of grinding 8 ounces of quartz, 92% of which passed through an 80-mesh sieve, in 10 seconds; 5 pounds sulphide ore in zy2 minutes, 84% of which passed through a 120-mesh sieve. Adjustment — Ore may be ground to any degree of fine- ness desired, from 60 to 150 mesh by a very simple ad- justment, consisting of a hand screw, which is fastened to the rear bearing and acts on the shaft, controlling the distance between the stationary and revolving disc. We recommend a speed of 1,000 r. p. m., which requires about 3 h. p. Shipping weight, 400 pounds. Floor space, 20 in. x 44 in. Price, f. o. b. Factory $150.00 Extra Special Metal Discs, per set 12.00 124 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2476 2476 CRUSHER, Weatherhead's Patent. Crusher and Pulverizer combined. Quickly reduces ores, pig iron, rock, clay, coal, etc., to fine powder. Readily cleaned. Discharges material as soon as pulverized. Working surfaces chilled. The. cover is made so that it may be used as a small hand mortar, the end of the handles being rounded in form of a pestle. One pound of pig^ iron at first operation can be reduced in 12 minutes to pass through sieves from No. 80 to 140, one pound glass in 7 % minutes $25.00 2477 2477 CRUSHER, Chipmunk, Improved. This crusher is made either for hand or power, has a capacity of from 300 to 400 pounds per hour with 400 revolutions per minute. Jaws are 6x3 inches, with an opening of 1^4 inches. The feed and discharge of this crusher is such as to recommend it for the crushing of all material and especially coal, which is difficultly discharged from other crushers. Net weight, 136 pounds, shipping weight, 180 Ibs. For Hand and Power, f. o. b. Factory $ 50.00 2477a CRUSHER. As above for Power T. and L. Pulleys, f. o. b. Factory 60.00 247'7b CRUSHER, Chipmunk Improved, large size. Capacity 1,000 to 1,500 pounds per hour with tight and loose pulleys for power, f. o. b. Factory 135.00 LABORATORY SUPPLIES AND CHEMICALS 125 2480 2478 2482 2478 CRYOPHORUS, Weinhold's form $1.50 2480 CRYOPHORUS. Wollaston's 1.00 2482 CUPS, Miners', of agate ware. Diameter, inches 5 6 Each $0.60 $0.75 2484 2485 2484 CUPELS, Of bone ash, best quality, securely packed in boxes of six dozen. Diameter on top, inches ............ . . 1 To absorb about, grams .............. 10 Per dozen, in boxes of six dozen ...... $0.25 2484a CUPELS, Dixon's "Wonder." Diameter, inches ...................... 1 Price, per hundred .................. $2,00 20 $0.30 30 $0.40 50 $0.65 $2.50 $3.00 $3.50 75 $1.00 2 4.00 2485 CUPELS, Trays, with detachable handle, for 16 cupels ............... ____ . 1.00 2486 2488 2490 2486 CUPEL Machine, Calkins' Automatic. For 1*4, IJ^ or 1^ inch cupels. Makes 600 cupels of uniform size, shape and density per hour. Price, with one size disc and die $50.00 Extra disc and die, for any one size 15.00 2488 CUPEL Machine, Calkins' Hand Feed. Table machine, making as perfect a cupel as the automatic machine. Price, with one size mould and die 30.00 Extra mould and die, for any one size 5.50 2490 CUPEL Moulds, Brass. Size, inches 1J4 1^ Each $2.50 $2.75 126 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2492-2494 2499 CUPEL Rake, iron, 24 inches long $1.00 2494 CUPEL Shovel, iron, 24 inches long 1.00 CUPEL Tongs. See Tongs. CYLINDERS 2496 2500 2502 2504 2506 2508 CYLINDERS, Calcium Chloride. See Jars. 2496 CYLINDERS, Graduated, double graduation, so that the divisions may be read up or down. Cap., c.c. 5 10 25 50 100 200 250 300 500 1000 2000 Each ...$0.40 .45 .55 .65 .75 1.00 1.10 1.25 1.35 2.55 4.50 2498 CYLINDERS, Graduated in ounces, on glass foot, with lip. Capacity, ounces 1 2 4 8 16 32 Each $0.50 .75 1.00 1.50 2.00 3.00 2500 CYLINDERS, Graduated and stoppered, double graduation so that the divisions may be read up and down. Cap., C.C.. 10 25 50 100 200 250 300 500 1000 2000 Each ....$0.90 1.10 1.35 1.45 2.25 2.60 3.00 3.50 4.00 6.00 2502 CYLINDERS, Hydrometer Jars, on glass foot, without lip. Height, inches 5 6 8 10 12 12 15 18 20 Diameter, inches 1 1 ll/a V/* lH 2 2 2 2 Each $0.20 .25 .35 .45 .50 .65 .80 .95 t!5 LABORATORY SUPPLIES AND CHEMICALS 127 2509 2509(a) 2504 CYLINDERS, Hydrometer Jars, on glass foot, with lip. Height, inches 5 6 8 10 12 12 15 18 20 Diameter, inches 1 1 \y2 \y2 \y2 2 2 2 2 Each $0.20 .25. 35 .45 .50 .60 .75 .951.25 2506 CYLINDERS, Hydrometer Jars, enlarged top, to guard against overflow. Height, inches 14 18 Each $1.50 2.25 2508 CYLINDERS, Wide, with top ground for glass plates, used for observing colors of gases, etc. Size, inches 8x4 12x3 12x4 15x3 Each $1.50 1.75 3.00 3.50 2509 CYLINDERS— "Drip Cups," with side funnel tube for acid chambers. Height of cylinder, inches 5 6 Each .$1.25 1.75 For other Cylinders, see Jars. DEFLAGRATING Globes, see Globes. Spoons, see Spoons. 2509(a) DEMIJOHNS, tall shape glass bottle, wicker covered. Capacity, gallon y2 1 2 3 5 Each $1.00 1.25 1.50 2.50 3.50 2510 2516 2510 DESICCATOR, Atwater's. With triangle $3.00 2516 DESICCATOR, Fruehling's, of large size, heavy glass, with large perforated porcelain plate which will support a number of crucibles or material to be dried. It will be found to be a valuable form for laboratory use. Inside diameter in inches 8 10 Price, each $8.00 9.75 128 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2526 2522 DESICCATOR, Scheibler's. With knob top, ground air tight. Inside diameter, inches 4 6 8 10 Each $1.50 2.00 5.50 10.00 2524 DESICCATOR, Scheibler's, With porcelain plate. Diameter, inches 4 6 8 10 Each $2.25 3.10 7.30 12.25 2526 DESICCATOR, Scheibler's. With stopcock ground in top. For Vacuum. Inside diameter, inches 46 8 10 Each .$6.00 7.50 10.00 17.50 2528 2534 2528 DESICCATOR, Bell Glass and acid dish on ground glass plate. Diameter of bell glass, inches 6 8 10 Diameter of glass plate 8 10 12 Diameter of acid dish 4J4 524 6/4 Each $4.00 4.50 5.00 2531 DESICCATOR Plates, of aluminum. Diameter, inches 3^4 ^A Each $1.50 1.50 2532 DESICCATOR Plates, of copper. Diameter, inches 3^4 5^2 Each . $1-00 1.00 2534 DESICCATOR Plates, porcelain, glazed on one side, on three small feet. Size number 1 2 3 4 5 Diameter, mm 95 115 140 190 240 Thickness, mm 44444 Number holes 34578 Diameter of holes 30 30 30 30 30 Each . . .75 1.00 1.25 2.00 2.50 2534 (a) Each (without feet) 75 .85 1.10 1.80 2.25 LABORATORY SUPPLIES AND CHEMICALS 129 2535 2536 2535 — DESICCATOR — Plates of Porcelain, glazed on one side, without feet, with nu- merous small holes. Thumb hole in center. Size number 4 5 Diameter, mrn 190 230 Number holes 700 900 Diameter holes, mm 2 2 Each $1.75 2.10 2536 DIALYSERS, Graham's, of stout white glass. Diameter, inches G 8 Each $2.50 3.50 2538-2540 2538 DIAMOND for cutting glass; in ebony handle, with key for breaking $ 5.00 2540 DIAMOND for writing on glass; in handle 2.50 2542 DIAMOND Ink, for writing on glass, in 1 ounce gutta-percha bottle 50 2544 2548 2544 DIES, Figures, of steel, for stamping bullion, etc. Best quality. Face, inches % & % & f£ -fa l/2 Set $1.50 1.75 2.00 2.50 3.00 3.50 4.00 2546 DIES, Letters, of steel, for stamping bullion, etc. Best quality. Face, inches & % & % ffc ^ iV V* Set $3.50 4.00 4.50 5.00 6.00 8.50 9.00 10.00 2548 DIPPERS, Agate Ware, with wooden handle. Size, inches 4J4x3 5^x3^ 6x3^ 6^x3J4 Each ; $0.60 .75 .90 1.00 130 A. DAIGGER & COMPANY, CHICAGO, U. S. A. DISHES 2550 2552 2550 DISHES, Crystalizing, of best American glass, straight walls, flat bottoms. Diameter, cm 5 6 7 8 9 10 11 Each $0.20 $0.25 $0.30 $0.35 $0.35 $0.40 $0.50 Diameter, cm 12 13 14 16 18 20 Each , $0.60 $0.70 $0.80 $1.00 $1.50 $2.00 2552 DISHES, Evaporating, round bottom, of best American glass, with lip. Diameter, cm. 4 5 6 7 8 9 10 12 15 Each $0.20 $0.25 $0.30 $0.35 $0.40 $0.45 $0.50 $0.75 $1.50 2554 2556 2554 DISHES, Evaporating, Iron, Porcelain lined. Diameter, inches 6 8 10 12 Capacity, pint 1 2 4 6 Each $1.00 $1.25 $1.50 $2.00 Diameter, inches 13 16 18 20 Capacity, gallon 1 2 3 4 Each $2.50 $3.00 $3.75 $5.00 2556. DISHES, Evaporating. Of pure nickel. Diameter, inches 1% 2 2^ 3% 4 4^ 6 Each $0.45 $0.55 $0.65 $1.00 $1.40 $2.00 $2.45 2557. DISHES, Copper, round bottom, with lip. Diameter, inches 2 ^ 3l/2 4 Capacity, cc 40 100 200 300 Each ..$0.40 $0.50 $0.60 $0.80 2559 2559(a) 2559 DISHES, Aluminum, for milk analysis with flat bottom and straight sides, polished outside with smooth finish inside.. Diameter, inches 2 2J4 2^4 3 * Height, inches }/2 ^ % 1 1 Each $0.25 $0.30 $0.35 $0.40 $0.50 Per dozen $2.40 $3.00 $3.60 $4.00 $5.00 2559 (a) DISHES, Aluminum, for moisture determinations with flat bottom, flaring sides and slip-in inverted cover. Diameter on top, 55 mm. Height, 15 mm. Each $0.50 LABORATORY SUPPLIES AND CHEMICALS 131 2560 2562 2560 DISHES, Evaporating, Coors, American Porcelain with lip. Sizes up to five are glazed inside and outside with exception of rim. Larger sizes are partly glazed outside. Size number . Diameter, .mm. Height, mm. .. . Capacity, cc. Each 000 60 24 35 . $0.12 00 70 27 60 .18 0 1 2 3 4 5 6 6a 7 80 85 90 100 110 120 145 162 185 30 33 37 42 43 50 48 51 54 80 100 140 175 210 300 385 535 765 .20 .30 .35 .40 .45 .55 .70 .80 .90 Size number 8 8a 9 10 Diameter, mm 215 230 265 305 Height, mm 63 70 80. 95 Capacity, cc 1285 1430 2200 3250 Each $1.20 1.50 1.80 3.00 11 12 13 360 400 460 116 140 175 5700 10000 16500 4.00 9.00 18.00 2562 DISHES, Evaporating, Coors, American Porcelain with wide lip and heavy welter rim. Glazed inside, but only partly outside. Size number 12 13 Diameter, mm 400 460 Height, mm 140 175 Capacity, cc 10000 16500 Each $12.00 20.00 2564 2568 2564 DISHES, Evaporating, Coors, American Porcelain, shallow form, with lip. Glazed inside but only partly outside. Size number . . 1 2 3 4 5 6 7 Diameter, mm. 70 80 95 105 120 140 160 Height, mm. .. 15 20 . 23 30 34 40 48 Capacity, cc. . . 45 60 95 160 200 350 550 Each $0.20 .25 .40 .60 .75 .90 2568 DISHES, Evaporating, Coors, American Porcelain, with lip and flat bot- tom. Shallow form. Number , 1 2 3 5 6 7 Capacity cc. .. 45 60 95 200 350 550 Diameter mm. 70 80 95 120 140 160 Each $0.20 .25 .40 .50 .60 .75 .90 2569 DISHES, of Fused Silica , unaffected by sudden and extreme changes of temperature, with lip and round bottom. No 1 3 5 7 9 10 11 Diameter, mm. 51 70 83 89 98 108 137 Depth, mm. . . 21 25 30 22 30 44 57 Capacity, cc. ., 20 50 75 80 125 200 400 Each $1.00 1.15 1.25 1.35 1.60 1.85 2.85 2571 DISHES, of Fused Silica, as above, with lip and flat bottom, shallow form. No 1 2 3 4 Diameter, mm. 63 73 95 127 Depth, mm. . . 13 13 18 21 Capacitv, cc. . 20 40 50 100 Each $1.15 1.25 1.35 1.85 2572 DISHES, Silver, any size, made to order. Please write for prices. 132 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2576 2577 5 .35 6 .40 75/2 1.70 2576 DISHES, Lead, for etching glass with hydro fluoric acid. Diameter, inches 2 y/2 3 4 Each $0.15 .20 .25 .30 2577 DISHES, Steel, enameled inside and outside. Very light in weight, strong and acid proof. Diameter, inches 6 J4 7^4 1°M$ Capacity, pints 1 2 4 Each $0.60 .80 1.20 2579 DISHES, Tin Foil, in shape of bottle caps used extensively in moisture determinations. Size, inches 2->6 2J^x§^ Per hundred $1.00 1.40 1.60 Per dozen 15 .20 .25 DISTILLING APPARATUS, see Retorts and Stills. DISTILLING FLASKS, see Flasks. DISTILLING TUBES, see Tubes. DRYING APPARATUS, see Dessicators, Ovens and Vacuum Apparatus. DRYING Ovens, see Ovens. ELECTROLYTIC APPARATUS GLASS PLUG"*! ATTACHMENT FOR ELECTROLYSIS OF WATER 2591 2593 2597 2591 ELECTROLYSIS OF WATER APPARATUS, improved with platinum electrodes that may easily be replaced by copper electrodes or by carbon electrodes for electrolysis of hydrochloric acid $7.50 LABORATORY SUPPLIES AND CHEMICALS 133 2612 2616 2618 2593 ELECTROLYSIS APPARATUS (Osborne Form), for study of conductiv- ity of liquids, ionization, electro-plating and electrolysis of water. This apparatus has been constructed to supply the urgent de- mand for a simple, substantial form of electrolytic apparatus that can be used to demonstrate the principles involved in the theory of electrolytic dissociation. It consists of an outer U tube with graduated sliding tubes, shot valves, glass plug and platinum electrodes, which are easily replaced by carbon or cop- per electrodes. It allows immediate change qf liquids, permits the introduction of litmus, methyl orange, cloth for bleaching or any other indicator, is readily cleaned, requires least amount of liquid to fill it. Complete as illustrated, with instruction for use $ 7.50 2595 SUPPORT for No. 2593, with binding posts 3.50 2597 ELECTROLYSIS OF WATER APPARATUS, Hoffman's improved form with graduated tubes, glass stopcocks and removable platinum electrodes -. 10.00 2599 SUPPORT for either No. 2591, No. 2597 or No. 2601, with binding posts.. . 3.50 2601 ELECTROLYSIS OF WATER APPARATUS, same as No. 2597 but without glass stopcocks 7.50 2603 CARBON ELECTRODES, two rubber stoppers fitted with carbon elec- trodes and connectors, adapted to Nos. 2591-2601 inclusive 75 2605 COPPER ELECTRODES, two rubber stoppers fitted with copper elec- trodes and connectors, adapted to Nos. 2591-2601 inclusive 75 2607 PLATINUM ELECTRODES, two rubber stoppers with platinum elec- trodes and connectors, adapted to Nos. 2591-2601 inclusive 2.50 3612 EUDIOMETER, Bunsen's, with platinum electrodes. Capacity 55 cc. in 1-5° 100 cc. in 1-5° Each $2.50 3.50 2614 EUDIOMETER, Bunsen's, graduated into millimeters, with platinum electrodes. Millimeters , 300 500 Each $2.50 $3.50 2616 EUDIOMETER, Mitchterlich's new style, with stopcock and platinum electrodes. Size 50 cc. in 1-5 100 cc. in 1-5 400 mm. Each $3.00 4.00 5.00 2618 EUDIOMETER, Ure's graduated in cc. U form, with platinum electrodes 50 cc. in 1-5 $3.50 2620 EUDIOMETER. Ure's improved form. The bend is made of heavy rubber tubing so that the instrument can be straightened out for con- venience in filling. 50 cc. in 1-5 5.00 134 A. DAIGGER & COMPANY, CHICAGO, U. S. A. EVAPORATORS Waste products become by-products when properly handled. During the last quar- ter of a century the Swenson Evaporator Company has been instrumental in the de- velopment of a large variety of by-product industries. Such interesting instances as the recovery and marketing of products from packing house waste waters, iron sulphate from wire and plate mills, pickle solutions, etc., are examples of successes in which they properly take a large share of credit. The Swenson Evaporator Company have installations at several institutions of learning throughout the country, among which the University of Michigan, Massachu- setts Institute of Technology, and Armour Institute of Technology are the most noted examples. Your further attention is directed to the Swenson advertisement in the advertising: section. 232 One of several Swenson types employed in the Swenson-University of Michigan Laboratory, where experiments with liquors in car lots can be made. These are the only facilities of this kind offered to American industries. 210 Swenson Jr. Single Effect, cast iron body, steel or copper horizontal tubes, jet condenser, vacuum pump, fittings. See blueprint, page 21, Swenson catalogue. LABORATORY SUPPLIES AND CHEMICALS 135 2628 2630 2632 2634 2636 2638 2640 2641 2626 EXTRACTION APPARATUS, Knorr's, with ether tight mercury joints, dispensing with corks and ground joints, complete $6.00 Extra condenser with adapter sealed on 3.60 Extra extraction tubes with platinum sieve 3.50 Extra flasks .40 2627 EXTRACTION APPARATUS, Knorr's, as above, but supplied with Sy's flask instead of Knorr's flask 6.50 Extra Sy's flasks, 150 cc. capacity 1.00 2628 EXTRACTION APPARATUS, Lehmann's, especially suitable for extrac- tion of bulky substances. With ground joints and one flask... 5.50 2630 EXTRACTION APPARATUS, Krussler's, with condenser, and 3 flasks ground on 6.00 2632 EXTRACTION APPARATUS, Mohr's, with flask and condenser 3.00 Extra outside tubes 80 Extra inside extraction tubes 30 2634 EXTRACTION APPARATUS, Soxhlet's, specially adapted to the extrac- tion of fat in milk analysis, etc. (Extraction tube only.) Capacity, cc 60 125 200 For shells, mm. 22x80 33x80 43x123 Each $2.00 3.00 4.00 2635 EXTRACTION APPARATUS, Soxhlet's, specially adapted to Cotton Seed Oil analysis, taking double thick shells 22x80 mm. (Ex- traction tube only.) A. Length of Syphon Tube, 1 inch $2.50 B. Length of Syphon Tube, 1^4 inch 2.50 2636 EXTRACTION APPARATUS, Soxhlet's, complete with flask and con- denser. Capacity, cc 60 ... 125 . . . 200 Each $2.50 5.50 6.50 N. B. — For size and price of extraction tubes only, see No. 2634. 2638 EXTRACTION APPARATUS, Soxhlet's, all points ground air tight, com- plete with three flasks and condenser. Capacity, cc - 60 125 Each • • $6.50 7.50 2640 EXTRACTION APPARATUS, Soxhlet's, complete with nickel plated brass ball condenser and flask. Capacity, cc 60 125 175 Each $6.50 7.50 10.00 264X EXTRACTION APPARATUS, Soxhlet's modified, with ground in Hop- kins' Condenser and Knorr's flasks for mercury seal. An ideal combination of ether tight joints. Capacity, cc 60 125 For extraction shells, mm . . • • 22x80 33x80 Each $6.50 7.50 136 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2641 (b) 2642 2643 2643 (a) 2641 (a) EXTRACTION APPARATUS, Wiley's, Richardson's, modification, de- scribed in the Jour, of Ind. and Eng. Chem., March, 1912. With perforated aluminum cup Extra glass tubes with flange Extra perforated cups Extra metal condensers " 2641 (b) EXTRACTION APPARATUS, as above, supplied with nickel plated syphon cup in place of perforated cup Extra Syphon cups 2642 EXTRACTION APPARATUS, Wiley's, consisting of a porcelain Gooch crucible suspended from a metal condenser which is fitted to a glass tube with ground flange, very condensed and convenient, doing away with all stonpers and connections 2643 EXTRACTION APPARATUS, Underwriter's pattern, described in the Jour, of Ind. and Eng. Chem., July, 1912. Consisting of special extraction flask, metallic spiral condenser and suspended porce- lain Gooch crucible Extra flasks Extra Gooch Crucibles Extra condensers " 2643(a) EXTRACTION APPARATUS, Underwriter's pattern, modified with glass syphon cup, see Jour, of Ind. and Eng. Chem., January, 1914 Extra syphon cups $5.00 1.50 1.00 2.50 5.00 1.50 4.50 3.00 .50 .75 1.75 3.00 .75 2643(b) 2643(b) ELECTRIC EXTRACTION APPARATUS. This apparatus consists of a set of six Electric Lamps, each with switch, encased in a box support made of fireproof asbestos wood, 30^2 inches long, 5J/2 inches wide and 7 inches high, including legs, with l^-inch hole over each lamp. The box support is equipped with iron uprights, extreme height 31 yz inches $50.00 2643(c) EXTRACTION APPARATUS, electrically heated, oblong form, S*/2 inches wide and 9 inches high, made of sheet iron. Each Heater, which is 3J4 inches diameter, is a unit, either one or all may be used at one time as desired — six heaters, 24 inches long 75.00 LABORATORY SUPPLIES AND CHEMICALS 137 2643(c) EXTRACTION APPARATUS, Sargent's, pat- ented Dec. 23, 1913, Electrically Heated, Revolving type. Will accommodate any style or size of glassware. Sliding condens- ing tubes obviate the necessity for moving the corks when once placed. No valves or washers. Adjustable in height. Requir- ing only about a square foot of space, may be set up in any out- of-the-way corner. No rubber tubing or clamps at condensers. Only one connection at water inlet and outlet necessary. Ar- ranged for either 110 or 220 volts direct or alternating cur- rent. Price without glassware $40.00 In ordering, state voltage desired. 2643(c) 2644 2644 (b) 2644 EXTRACTION SHELLS, Whatman, fat free paper, for use in Soxhlefs and other extraction apparatus. The use of these shells renders it impossible for any of the material to find its way into the solvent; can be used over and over again. Put up in boxes of 25. Length, mm 80 80 80 90 94 123 Diameter, mm 22 25 39 19 33 43 Per box of 25 $3.15 3.55 3.55 3.15 4.40 7.10 2644(a) EXTRACTION SHELLS, Whatman, as above, but of double thickness, will not permit the finest substances to pass through; put up in boxes of 25. Length, mm 80 80 80 90 94 123 Diameter, mm 22 25 33 19 33 43 Per box of 25 $5.28 5.92 5.92 5.28 7.36 11.84 2644(b) EXTRACTION SHELLS, Alundum, for use with Soxhlefs and other extrac- tion apparatus; may be used repeatedly and easily cleaned by ignition. Length, mm 60 70 80 90 100 Diameter, mm 26 25 30 19 34 Shape at bottom Round Flat Flat Flat Round Each Net $0.40 .40 .45 .50 .60 Above Shells are supplied in three degrees of porosity: RA84, Dense; RA360, Medium; RA98, Porous. If no degree of poros- ity is specified, RA98 will be sent. 138 A. DAIGGER & COMPANY, CHICAGO, U. S. A. APPARATUS FOR ANALYSIS OF COMMERCIAL FATS AND OILS (By Standard Methods as adopted January 13, 1918, Committee of Division of Industrial Chemists and Chemical Engineers of American Chemical Society). VACUUM OVEN 2645/1 "The Standard F. A. C. Vacuum Oven has been designed with the idea of affording a simple and compact vacuum oven which will give as uniform tem- peratures as possible on the shelf. It consists of an iron casting of rectangular sections with hinged front door, which is accurately counterpoised. The door is made tight by a gasket and which can be lowered on opening the oven so as to form a shelf on which samples may be rested. The oven contains but one shelf which is heated from above as well as below by means of resistance coils. Several thermometer holes are provided in order to ascertain definitely the temperature at different points on the shelf. ' The entire oven is supported by means of a 4" standard pipe which screws into the base of the oven and which in turn is supported by being screwed into a blind flange of suitable diameter which rests on the floor or work table." Dimensions — overall — 15"xll"x8" high. Price for oven $150.00 MOISTURE DISHES 2645/2 Shallow, glass dish, beaker form, approximately 6 or 7 cm. in diameter and 4 cm. deep. *• Price, per dozen $3.00 EXTRACTION CYLINDERS The cylinder may or may not be glass stoppered. Dimensions — 12" high and l}i" diameter. Graduated at 40, 80 and 130 cc. These cylinders are made with base or plain bottomed with nickel plated holders which may be screwed to work table. 2645/3 Cylinders, plain bottom Each, $0.50 2645/4 Cylinders, with base • Each, .75 2646/5 Cylinders, glass stoppered, with base Each, 1.75 2646/6 Cylinders, glass stoppered, with plain bottom Each, 1.50 2646/7 Holders, nickel plated • • Each, .75 STANDARD THERMOMETER (TITER) 2646/8 "The thermometer is graduated at zero and in 1/10° from 10°C to 65°C, wiilj one auxiliary reservoir at the upper end and another between the zero mail* and the 10° mark. The cavity in the capillary tube between the zero mark and the 10° mark is at least 1 cm. below the 10° mark, the 10° mark is 3 or 4 cm. above the bulb, the length of thermometer being 37 cm. overall. The thermometer has been annealed for 75 hours at 450°C, the bulb is of Jena normal 16" glass, or its equivalent. Bulb is about 3 cm. long and 6 mm. in diameter. Stem of thermometer is 6 mm. in diameter and made of the best thermometer tubing, with scale etched on the stem. The thermometer musl be certified by the U. S. Bureau of Standards. Thermometer as above described, with certificate of Bureau of Stand- ards, each '. $10.00 2646/9 Same, without certificate of the Bureau of Standards 6.00 LABORATORY SUPPLIES AND CHEMICALS 139 2646 2646 EXTRACTION PAPER, Whatman, fat free. For the accurate determination of fat in milk by the Adams method. Size of strip 58x6.25 cms. Per package of 50 $2.80 Per package of 100 5.20 See also Milk Analysis Apparatus. FERMENTATION TUBES, see No. 4200. FIGURES, of Steel, see Dies. (a) 2647 (b) 2647(c) 2647 FAUCET CONNECTIONS— For rubber tubing for smooth faucets. See two styles, a and b: Size faucet, inch J^ fg Each $0.60 .80 2647 (c) FAUCET CONNECTIONS— For rubber tubing, with hydrant thread. Each, .60 2648-2650-2652-2654 2648 FILES, Flat, for shaping corks, etc. Length, inches 5 6 8 Each $0.25 .30 .40 2650 FILES, Half Round, for shaping corks, etc. Length, inches 5 6 8 Each $0.25 .30 .40 2652 FILES, Round, for enlarging holes in corks, etc. Length, inches 4568 Each $0.20 .55 .30 .40 2654 FILES, Triangular, for cutting glass tubing, etc. Length, inches 3 4 5 6 Each $0.16 .20 .26 .30 2656 FILE Handles.. .10 140 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2661 2662 2663 2664 2661 FILTER APPARATUS — Fitzgerald's, for constant level. Capacity of reservoir 250 cc. The lower opening is closed by means of a long glass rod with ground stopper. The side opening is intended for pouring in the liquid to be filtered. $2.50 2662 FILTER APPARATUS — Consisting of glass plate, bell jar with tubulature below and at top, fitted with rubber stopper and funnel. Size of bell jar, inches 5^x8}/£ 7x11 Each $5.00 8.50 2663 FILTER APPARATUS— Consisting of glass plate and bell jar, 5x9 inches, fitted with rubber stopper and funnel. $5.00 2664 FILTER APPARATUS— With ground in funnel and ground on cover, for' filter- ing volatile liquids. Capacity, cc 500 1000 Each $5.00 6.00 2668 2669 2671 2668 FILTER Bags, Felt. Size, inches 11x12 13x15 14x16 16x19 Capacity, gallons 1 1% 12-3 2 Each $1.75 2.00 2.25 3.25 FILTER Cones of Platinum, see Cones, Platinum, 2669 FILTER Cone — For filtering, made of nickel, seamless, and profusely perforated; Size, \y2 inches diameter $2.50 2669(a) FILTER Cones, Porcelain, glazed with exception of rim, with holes about 1 . mm. diameter. Size number 4, diameter 63 mm. Each ' $1.50 2671 FILTER CASES — Japanned tin, holding 6 sizes of cut filters, from 3 to 7% inches . SL50 LABORATORY SUPPLIES AND CHEMICALS 141 2673 2673 FILTER CONES, Alundum, for the rapid and complete separation of precipi- tates from solutions by means of suction. They may be used in any sixty degree funnel and are placed in operation, by stretching a wide band of rubber tubing over the funnel. No 7241 7056 7730 Diameter, inches 1^4 2% 4J^ Height, inches 1& 1^ 3}^ Each $0.30 .35 .50 Above cones can be furnished in three degrees of porosity, R A 320 Dense; R A 321 Medium; R A 322 Porous. If no degree of porosity is specified R A 322 will be sent. 2678 2678 FILTER PLATES, Hirsch— Porcelain. Glazed, Perforated Beveled edges for use in funnels. Size No 0 1 2 3 4 5 Diameter, mm 21 25 38 50 75 100 Each $0.25 .30 .35 .40 1.00 1.50 2679 FILTER PLATES, Alundum, can be used in place of Hirsch plates in many operations. Made with straight or 60 degree beveled edge. Supplied in two degrees of porosity, R A 225 medium and R A 98 porous. Diameter, inches $4 1 1 2 3 4 Thickness, inches A ik -fa & l/i A Edges Straight Straight Bevel Bevel Bevel Bevel Each $0.25 .25 .25 .35 .50 .75 If no degree of porosity is specified R A 98 will be sent. 2680 FINGER COTS, Black rubber, thin or thick, per dozen $0.60 142 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2681 2681 FILTER PRESS, Laboratory Moore Experimental, round pattern. For labora- tory use, built to stand a pressure of 150 pounds to the square inch. Made with flat plates and frames, so that filter cloth or paper can be used; of iron, with brass valves fitted to pump; weight, about 125 pounds. Net, each $100.00 FILTER PAPER 2716 FILTER PAPER, Celeritas. These filters are made of an excellent quality of white papers which filters rapidly, and is unusually strong when wet. They give excellent satisfaction in qualitative analysis, and in pharmaceutical and manufacturing work. Round filters, 100 in a package. Diam., inches.. 3 3]/2 4 5 6 8 10 13 15 18 20 Per 100 filters.. $0.20 .22 .24 .30 .40 .66 .92 1.40 1.72 2.40 3.00 In square sheets, 19x19 inches, per quire $ 0.80 Per ream.. . 13.60 MUNKTELL'S SWEDISH FILTER PAPER Weights of Ashes from MunktelTs Swedish Cut Round Filters Size 5.5 Ctm. 7 Ctm. 9 Ctm. 11 Ctm. 12.5 Ctm. 15 Ctm. Gram. Gram. Gram. Gram. Gram. Gram. No. 00 0.000011 0.000018 0.000030 0.000045 0.000058 0.000083 No. 0 0.000060 No. OB 0.000085 No. IF 0.00014 No. 2 0.00018 Owing to import restrictions we do not list these papers under present conditions. We shall be glad, however, to quote on your requirements of these filters from our large and comprehensive Chicago stock. 0.00010 0.00017 0.00025 0.00033 0.00046 0.00014 0.00024 0.00035 0.00047 0.00065 0.00023 0.00038 0.00056 0.00073 0.00105 0.00030 0.00051 0.00074 0.00095 0.00138 LABORATORY SUPPLIES AND CHEMICALS 143 WHATMAN FILTER PAPERS (British Made) All grades are guaranteed free from Starch and Chlorine. All Whatman Circles are put up in sealed boxes, distinctively labeled. We offer the following grades of Whatman niters with imported paper equivalents conforming in quality as far as possible: 2704 FILTER PAPER, Whatman, No. 1 (S. & S. No. 595), a good, light paper, for general qualitative use. Free from chlorine, grained surface, round niters. Diam. in cms... 4.25 5.5 7 9 11 12.5 15 18.5 24 27 32 38.5 40 50 Each $0.15 .17 .20 .24 .28 .37 .51 .71 1.25 1.48 2.30 2.76 3.13 4.40 In sheets 18^4 inches x 22l/2 inches, per 100 $ 4.45 Ditto, per ream 20.25 2705 FILTER PAPER, Whatman No. 2 (S. & S. No. 597), a qualitative paper similar to No. 2704, but stouter, retaining fine precipitates. This is the standard grade for analytical purposes. Widely used in the qualitative analysis of the alkaline earths, and in general where fine precipitates of crystalline nature are to be filtered. Especially applicable to Fertilizer, Cement, Steel and Ore Analysis. Diameter, cm 7 9 11 12.5 15 18.5 24 Ash weight per circle, grams 0007 .0012 .0018 .0024 .0034 .0052 .0089 Per 100 circles! $0.27 .34 .42 .52 .74 1.04 1.78 In sheets 18J4 inches x 22l/2 inches, per 100 $ 6.85 Ditto, per ream 31.10 2706 FILTER PAPER, Whatman No. 3 (S. & S. No. 598), a very stout filter paper for general qualitative work. Slightly slower than No. 2, but very retentive. Will withstand considerable washing. Especially suited for -fine precipitates, such as Metastannic Acid, Calcium Oxalate, and Ammonium Phospho-Molyb- date. Very satisfactory for filtering the solution of a fusion made with Eschka's mixture in determining Sulphur in coal and coke; can also be used in recovering small quantities of Silver in the form of chloride. Diameter, cm 7 9 1112.5 1518.5 Per 100 circles $0.40 .50 .57 .74 1.04 1.46 In sheets, IS]4 inches x 22J/2 inches, per 100 $10.20 Ditto, per ream 46.40 144 A. DAIGGER & COMPANY, CHICAGO, U S. A. 2707 FILTER PAPER, Whatman No. 4 (S. & S. No. 604), a soft paper of more open texture than the preceding. Extremely rapid, but not re< om- mended for use with the finest precipitates. Especially adapted for the rapid filtration of gelatinous and Jarge par- ticles precipitates such as Ferric Hydroxide and Aluminum Hydroxide; also useful for Pharmaceutical purposes, such as the filtration of fruit juices, syrups, oils, etc. Widely used in Copper and other Ore Mining, Sugar and Cement Labora- tories. Diameter, cm 7 9 1112.5 1518.5 24 Per 100 circles $0.30 .40 .50 .65 .901.302.22 In sheets 18^4 inches x 22l/2 inches, per 100 $ 8.75 Ditto, per ream £9.90 2708 FILTER PAPER, Whatman No. 5 (S. & S. No. 602), a very tough, hard paper of close texture, that will retain the finest precipitates, such as Barium and Lead Sulphates even when freshly precipi- tated. Especially suited for use with solutions which are filtered with difficulty, and for vacuum filtrations with the Buechner funnel, etc. Diameter, cm 7 9 11 12.5 15 Per 100 circles $0.27 .34 .41 .54 .75 In sheets, 18J4 inches x 22^ inches, per 100 $ 6.95 Ditto, per ream 31.50 2709 FILTER PAPER, Whatman No. 30 (Dreverhoff No. 207; Munktell No. 0), a single acid-washed paper of low ash content, rapid and re- tentive. Very satisfactory for the filtration of Ammonium Phospho-Molybdate, Barium Sulphate when properly pre- cipitated, for volumetric Lime determinations and for general quantitative work when the lowest ash is not important. Extensively used in Cement and Metallurgical Laboratories. Diameter, cm 7 9 11 12.5 15 18.5 Ash weight per circle, grams 00012 .0002 .0003 .0004 .00057.00087 Per 100 circles $0.68 .90 1.20 1.50 1.90 2.70 In sheets, 18^4 inches x 22^ inches, per 100 $21.55 Ditto, per ream •. 97.80 2710 FILTER PAPER, Whatman No. 31 (Munktell No. OB), a single-acid-washed paper similar to No. 30, but more open in texture, making it more rapid. On account of its extreme rapidity it is not recommended for the finest precipitates. Suitable for the very rapid filtration of gelatinous and large particle precipi- tates, for volumetric determinations of Phosphates, for Sili- con in Iron Analysis, and general rapid quantitative separa- tions where the lowest ash weight is not essential. Extens- ively used in Metallurgical Laboratories. Diameter, cm 7 9 11 12.5 15 18.5 Ash weight per circle, grams 00012 .0002 .0003 .0004 .00057 .00087 Per 100 circles $0.68 .90 1.20 1.50 1.90 2.70 8711 FILTER PAPER, Whatman No. 40 (S. & S. No. 5892, White Ribbon), a double- acid-washed paper of very low ash, all mineral matter having been removed by treatment with hydrochloric and hydro- fluoric acids. Filters rapidly and retains fine precipitates. This is the standard double-washed grade for analytical pur- poses. Excellently suited for Barium Sulphate when prop- erly precipitated and filtered hot, also for Lead Sulphate, and for crystalline precipitates, such as Magnesium-Ammonium Sulphate, etc. Diameter, cm 7 9 11 12.5 15 Ash weight per circle, grams 00005 .000082 .00012 .00016 .00023 Per 100 circles $1.20 1.70 2.00 2.30 2.70 2712 FILTER PAPER, Whatman No. 41 (S. & S. No. 589, Black ribbon), a double- acid-washed paper similar to No. 40, but more open in texture and therefore filters more rapidly. Suitable for Iron, Alumi- num, and other gelatinous precipitates which can be filtered quickly and washed rapidly and easily. Widely used in deter- mining Silicon in Iron and Steel Analysis. Diameter, cm 7 9 11 12.5 15 Ash weight per circle, grams 00005 .000082 .00012 .00016 .00023 Per 100 circles $1.20 1.70 2.00 2.30 2.70 LABORATORY SUPPLIES AND CHEMICALS 145 2713 FILTER PAPER, Whatman No. 42 (S. & S. No. 589s, Blue Ribbon), a double- acid-washed paper, similar to No. 40, but much harder and extremely close in texture. On account of its close texture it is recommended for use with the filter pump and as folded niters where possible. Especially adapted for the finest pre- cipitates which tend to pass through the filter paper, such as Barium Sulphate when precipitated in cold solution, and in general for precise analytical work where speed is not im- portant. Diameter, cm 7 9 11 12.5 15 Per 100 circles $1.20 1.70 2.00 2.30 2.70 2714 FILTER PAPER, Whatman No. 43 (S. & S. No. 589*, Yellow Ribbon), a double- acid-washed paper, of the same stock as No. 40, but having been subjected to an additional chemical process which renders it fat-free. Especially suited for the recovery of the ether extract in the Roese-Gottlieb Fat Test, and in general for any purposes requiring a fat-free paper. Diameter, cm 7 9 11 12.5 15 Per 100 circles $1.50 2.20 2.55 2.80 3.60 2715 FILTER PAPER, Whatman No. 44 (S. & S. No. 590), a double-acid-washed paper of thinner substance and lower ash content than the preceding numbers. It will retain the finest precipitates, but is slightly slower in filtration than No. 40. No. 44 is recom- mended for use when the greatest possible degree of accuracy in quantitative work is required. Diameter, cm 7 9 11 12.5 15 Ash weight per circle grams 00003 .00005 .000077 .00001 .00014 Per 100 circles $1.50 2.20 2.55 2.80 3.60 2715a FILTER PAPER, Whatman No. 50 (S. & S. No. 575), a paper specially hard- ened by treatment with Nitric Acid. Very tough, will resist great pressure, and retain the very finest precipitates. Can be used repeatedly, the hard smooth surface permitting precipitates to be scraped or washed off without injury to the paper. Especially recommended for use with vacuum. Suitable for very fine precipitates and for filtering corrosive liquids such as Acids and strong Alkalies. Should be used when it is desired to transfer a precipitate without ignition. Widely used for filtering Biological products, as the hardened surface prevents contamination of the filtered product by particles of paper when scraped off. Can be used as a sub- stitute for platinum cones, and as supports for large folded . filters to prevent them bursting at the points. Diameter, cm 4% 5l/2 7 9 11 12.5 15 18% 24 32 50 Per 100 circles $0.55 .90 1.20 1.70 2.00 2.30 2.70 3.60 6.10 11.35 20.85 Orders less than $100.00, list prices Strictly Net Orders amounting to between $100.00 and $200.00 list prices 5% Orders amounting to over $200.00 10% For institutions of learning we can arrange Special Duty Free Importations of Whatman Filter Papers upon the condition that all necessary Government requirements are complied with. Full information upon request. 2715b FILTER PAPER, Celeritas (S. & S. No. 588), Folded, excellent quality, free from chlorine, folded in such a way as to protect the points from tearing. In boxes of 100 filters. Diameter, cm 12.5 15 18.5 24 32 50 Per box of 100 $1.50 1.80 2.25 3.00 5.00 7.50 2715c FILTER PAPER, Grey, French, Prat-Dumas make, size, 17x22 inches. Ream, 7.50 quire $0.40 Circular, put up in packages of 100 sheets. Diameter, cm 10 125^ 15 19 25 33 40 45 50 Per 100 sheets. . .$0.20 .30 .40 .66 .92 1.40 1.72 2.40 3.00 146 A. DAIGGER & COMPANY, CHICAGO, U. S. A. Discounts applying to Whatman Filter Papers STOCK— Orders less than $100.00 list value. List prices NET. Orders of $100.00 list value. List prices less 5%. Orders of $200.00 and over. List prices less 10%. Special importations of Whatman Paper may be arranged for institutions of learning. DUTY FREE on Orders less than $125.00 list value. List prices less 15%. Orders of $125.00 list value. List prices less 15% and 5% Orders of $250.00 and over. List prices less 15% and 10%. FLASKS 2718 372G 2725; 2723 2730 2718 FLASKS, Assay, or Parting, conical with ring. Capacity, ounces 2 3 4 8 Each $0.20 .25 .30 .35 2720 FLASKS, Assay, conical, tall shape. Capacity, ounces 4 6 8 16 Each $0.20 .25 .30 .35 2722 FLASKS, Assay, Colorado form, pear shape. Capacity, ounces , 1 2 Each .$0.15 .20 2723 FLASKS, Assay, conical, for precipitating phosphorus from iron ores $0.35 2730 FLASKS, Chemical, flat bottom, vial mouth, Non Sol Glass. Capacity oz 1 2 4 6 8 12 16 24 32 48 Each $0.10 .11 .13 .15 .16 .20 .25 .35 .40 .55 Capacity, gallons ^2 1 2 3 Each . $0.60 1.25 2.00 3.00 2732 FLASKS, Flat Bottom, Pyrex Glass, with vial mouth. Capacity, c.c... 50 100 150 200 300 400 500 700 1000 1500 2000 3000 6000 12000 To take rubber stopper, No.. 00124466 7 7 8 9 10 10 Number in orig- inal case 192 168 108 144 96 84 72 36 36 24 18 12 12 6 Each $0.15 .16 .18 .20 .23 .26 .29 .36 .43 .51 .60 .76 1.60 3.00 All Pyrex Glass in original case lots at 10% discount. Special prices in larger quantities purchased at one time. LABORATORY SUPPLIES AND CHEMICALS 147 2738 2740 2744 2746 2748 2738 FLASKS, Chemical, flat bottom, heavy ring around mouth to bear tight corking. Non Sol glass. Cap cc ...."...." 250 500 1000 2000 Each $0.30 .37 .54 .77 2739 FLASKS, Flat bottom, Pyrex glass, with heavy ring neck. Capacity, cc 500 700 1000 1500 2000 3000 6000 12000 To take rubber stopper, No 6 6 7 7- 9 9 10 10 Number in original case 72 36 36 24 24 12 12 6 Each ." $0.38 .47 .55 .66 .78 .99 1.75 3.30 2740 FLASKS, Chemical, round bottom, vial mouth. Non Sol glass. Capacity, ounces 1 2 4 8 16 32 64 Each .".' ....$0.12 .14 .16 .25 .35 .55 .78 2742 FLASKS, Round bottom, Pyrex glass, with vial mouth. Capacity, c.c 100 150 200 300 400 500 700 1000 1500 2000 3000 To take rubber stopper, No... 2334447 5 7 9 10 Number in original case.. 84 ISO 144 84 72 48 42 30 24 18 12 Each $0.17 .20 .22 .28 .32 .37 .45 .56 .71 .79 1.07 2744 FLASKS, Conical, with lip, so-called Beaker Flasks, Nonsol glass. Capacity, ounces 2 4 8 16 32 Each $0.20 .20 .30 .45 .75 2746 FLASKS, Copper determination, Nonsol glass, pear shaped, wide mouth. Capacity, ounces 6 8 Each $0.20 .30 2748 FLASKS, Kje-ldahl, Pyrex glass, with long neck and round bottom. Capacity, c.c 300 500 800 Outside diameter of neck, mm 30 31 35 To take rubber stopper, No •. 5 6 6 Total length, mm 298 327 365 Number in original case : 60 36 36 Each $0.28 .37 .45 The 200 C C furnished also in 9>£ inch overall length, packed 60 pieces per original case. The 500 C C furnished also in 9J4 inch overall length, packed 48 pieces per original case. The 800 C C furnished also in 11 inch overall length, packed 36 pieces per original case. 2,749 FLASKS, KjeldahFs, Pear shape, of Copper, with extra long necks, for Nitro- gen determination. Capacity, 900 c.c., each $5.00 2749 (a) FLASKS, Kjeldahl's, made of heavy copper, 4 inches in diameter, 8^ high, capacity about 1000 c.c. Made especially for the deter- mination of Nitrogen by the Kjeldahl method. Each $4.50 148 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2750 2753 2756 2750 2752 2753 2756 FLASKS, Distilling, with side neck. Nonsol glass. Capacity, ounces 1 2 4 8 16 32 64 Each $0.30 .39 .44 .48 .58 .981.48 FLASKS, Distilling, Pyrex glass, with side tube in middle of neck. Capacity, c.c 50 125 250 500 1000 1500 2000 3000 Each .". $0.38 .43 .52 .70 1.00 1.25 1.40 1.95 Note: — If specified when ordering, side tube may be located where desired. FLASKS, Distilling, Claisen's. Capacity, c.c 60 125 250 500 Each $0.55 .65 .75 1.00 FLASKS, Distilling, Ladenburg's, 3 bulbs. Capacity, c.c 100 200 500 100U Each , $0.75 1.00 1.50 2.00 o o 2757 2757(b) 2757(d) 2757 FLASKS, For moisture in grains, as used by the Bureau of Plant Indus- try, U. S. Department of Agriculture. Made of glass $1.00 2757 (a) FLASKS, As above, made of copper, with double walls 5.00 2757(b) FLASKS, Engler's, distilling, for the distillation of petroleum and crude oil. Capacity 125 c.c 40 Capacity 250 c.c 50 2757 (c) FLASKS, Engler's, distilling, Pyrex glass. Capacity, c.c 100 200 250 Each $0.40 .55 65 2757(d) FLASKS, Hempel's, distilling. Made especially for the distillation of creosote, as used by the Forest Service of the U. S. Department of Agriculture. Each .$1.50 LABORATORY SUPPLIES AND CHEMICALS 149 2760 2763 2766 2767 2758 FLASKS, Erlenmeyer's. Non Sol glass. Capacity, oz 2 4 6 8 12 16 24 32 64 Each ...$0.10 .12 .14 .16 .20 .27 .33 .42 .60 Capacity, c.c.. 25 50 100 150 200 250 300 500 600 750 1000 1500 2000 3000 4000 No .00 1 3 4 5 5 6 6 6 7 8 9 10 10 10 Number in original case 360 276 180 252 144 132 132 72 60 48 36 24 24 15 12 Each $0.13 .14 .15 .16 .16 .20 .21 .27 .28 .33 .42 .51 .60 .79 1.00 2762 FLASKS, Extraction, Non Sol glass, wide mouth, short neck, for Soxhlet's extraction apparatus; so-called "Carbonic Acid" flasks. Capacity, ounces 1 2 4 6 8 Each $0.13 .14 .15 .17 .19 2763 FLASKS, Extraction, Pyrex Glass, flat bottom, with wide mouth and vial neck. Capacity c.c 50 100 150 250 500 750 1000 To take rubber stopper, No 667 8 10 10 11 Number in original case 168 120 108 120 60 48 36 Each $0.13 .15 .17 .19 .29 .36 .54 2764 FLASKS, Extraction, of Aluminum. Capacity, 4 oz. Each $1.50 2765 FLASKS, Extraction, of Copper. Capacity, 4 oz. Each 1.50 2766 FLASKS, Extraction, Knorr's, with mercury seal. Capacity, 100 c.c. Each.. .50 2767 FLASKS, Acetylization, for determining Menthol in Oil of Peppermint, etc, with ground-in condensing tube. Capacity about 150 c.c. Length of condensing tube, 1 meter $1.75 2767(a) 2767 (b) 2767(c) 2767(d) 2767(a) FLASKS, Sulphur, flat bottom, with side neck bent at right angle, as used in determining sulphur in iron and steel. Capacity, 500 c.c 75 27S7(b) FLASKS, Johnson's Sulphur, of Pyrex glass with heavy vial neck. Used widely for determining sulphur in iron and steel analysis. Capac- ity, 275 c. c.; neck of size to take No. 6 rubber stopper 32 2767 (c) FLASKS, Copper. Capacity, cc 250 500 1000 2000 Each $2.25 2.50 3.00 4.00 150 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2768 2770 2771 2771(a) 2771 (b) 2767(d) FLASKS, Round Bottom, Balloon Form, Pyrex Glass, with short ring neck. Capacity, cc 200 500 1000 1500 2000 3000 5000 12000 22000 To take rubber stopper, No 3 6 8 9 10 10 11 12 12 Number in orig- inal case 144 72 36 24 18 12 6 6 8 Each $0.24 .38 .55 .66 .78 .99 1.29 3.00 6.60 2768 FLASKS, Filter, Erlenmeyer form, of extra heavy glass, to withstand vacuum. Capacity, cc 250 500 1000 2000 Each $0.45 .65 .80 1.50 2770 FLASKS, Filter, Erlenmeyer form, with side neck, of extra heavy glass. Capacity, cc 250 500 1000 2000 4000 Each $0.45 .65 ,80 1.50 4.50 2771 FLASKS, Erlenmeyer, with ground in hollow glass stopper. Capacity, cc 125 250 400 500 1000 Each $0.75 1.00 1.25 1.50 2.00 2771(a) FLASKS, Erlenmeyer, with ground in hollow stopper and gutter, for de- termination of the Iodine number, capacity 300 cc , . . .$1.50 2771 (b) FLASKS, Sy's, for extraction apparatus, with mercury seal, easily cleaned. Capacity, cc 10o 150 Each $0.85 1.25 B 2773 2774 2775 2776 2777 2773 FLASKS, Soil or Crude Fibre, Erlenmeyer shape, with ground in condensing tube of 1 meter length. Capacity, cc 250 500 Each • $200 2.50 2774 FLASKS, Giles, with bulb in neck and two marks, so-called "Percentage Flasks," with glass stoppers. Graduated at, cc 500 & 550 1000 & 1100 2000 &2200 Each , $2.00 2.50 4.50 2775 FLASKS, Cassia, for assaying Cinnamic Aldehyde, capacity about 125cc, neck graduated to 6cc in l/10cc, with glass stopper $2.50 2776 FLASKS, Sugar Flasks, with two marks on neck. Graduated at, cc 50 & 55 100 Si 110 200 & 220 Each $0.60 .80 1.20 2777 FLASKS, Sugar, Bates', pear shaped, supplied with funnel top. Graduated according to the requirements of the Bureau of Standards at lOOcc. . . .$1.25 LABORATORY SUPPLIES AND CHEMICALS 151 2778 1780 2782 2773 FLASKS, Saccharometric, sugar, Kohlrausch's. Capacity, cc 50 Each $0.60 100 .80 200 201.2 201.4 1.30 1.30 1.30 2780 FLASKS, Volumetric or liter flasks, volume fixed by mark on neck. Graduated at re 10 20 25 50 100 200 Each $0.25 .30 .40 .50 .60 .75 Graduated at cc 250 300 500 1000 2000 Each $0.75 .85 1.10 1.40 2.25 2782 FLASKS, Volumetric or liter flasks, glass stoppered, with one mark on neck. Graduated at cc. 25 50 100 200 250 300 500 1000 2000 Each $0.75 100 1.10 1.25 1.25 1.40 1.50 2.00 3.00 2783 FLASKS, Volumetric or liter flasks, glass stoppered, graduated to meet the re- quirements of the National Bureau of Standards, Washington, D. C. Capacity, cc 25 50 100 250 500 1000 Each $1.25 1.50 1.75 2.00 2.50 3.50 2783 (a) FLASKS, Volumetric or liter flasks, glass stoppered, with one mark on neck, standardized by the National Bureau of Standards, Washington, D. C., with Government stamp. Capacity, cc 25 50 100 250 500 1000 Each $1.75 2.00 2.25 2.50 3.00 4.25 FORCEPS 2785 2790 2784 FORCEPS, brass, straight $0.25 2785 FORCEPS, brass, ends bent 25 2786 FORCEPS, brass, ends bent, nickel plated '. 30 2790 FORCEPS, brass, ends bent, with ivory tips 1.25 2791 2792 2791 FORCEPS, French form, with platinum tips 2792 FORCEPS, Plattners, nickel plated, with platinum tips tips..) At Market Price 2793 2794 2793 FORCEPS, Steel, Plain. Size, inches 4 5 6 7 8 Price, each : $015 .25 .30 .40 .50 2794 FORCEPS, Gooseneck, Nickel-plated, 6 inches long $0.76 FRACTIONAL, Distilling Apparatus, see Flasks, Receivers and Tubes. 152 A. DAIGGER & COMPANY, CHICAGO, U. S. A. FUNNELS 2798 2800 2808 2809 2811 2798 2800 2808 2809 2811 FUNNELS, Agateware. Capacity, pints Each $0.40 .50 2 .60 FUNNELS, Carbon Filters or Filter Tubes, of glass. Diameter at top, inches ................................ 1 J^ Each .................................................. $0.25 4 .75 1.15 .30 .35 FUNNELS, Glass, with bulb for filtering through glass wool or absorbent cotton. Diameter, inches 468 Each $0.50 .75 1.50 FUNNELS, of best, clearest glass, stems of medium length, angle approxi- mately 60 degrees; the end of the stem ground to a point. Diameter, in.. U/z 2 2l/2 3 3^ 4 5 6 8 10 12 Each $0.20 .25 .30 .35 .40 .45 .60 .75 1.00 1.50 2.00 FUNNELS, Bunsen's ground top, stems ground to point, exact angle of 60 de- grees. Our Bunsen Funnels will, we believe, please the most particular user. Every Bunsen Funnel sold by us is guaranteed to be accurate and filter rapidly. Diameter, cm Length of stem, mm. Each 4 . 100 . $0.25 5 125 .30 6 125 .35 7 130 .40 9 130 .50 10 135 .60 2812 2814 2812 FUNNELS, Glass, ribbed, for rapid filtration. Diameter, inches 4J4 5 Capacity, ounces 4 8 Each $0.20 .25 2814 FUNNELS, Hard Rubber. Capacity, ounces 4 8 Each $0.50 .60 6 7J4 9 16 32 64 gal. 1 .35 .50 .80 1.00 16 32 V* gal. 1 gal. .75 1.00 1.50 2.25 LABORATORY SUPPLIES AND CHEMICALS 153 2815 (a) 2815 2815 FUNNEL, single wall, of copper, suspended in Ring Bunsen Burner, attached to support; size of base, 5J4 by Tl/t inches, rod 20 inches high $7.50 2815(a) FUNNEL, of copper, ribbed, for sugar analysis, diam. 4 inches 50 2817 FUNNEL, of heavy copper, single wall with coil, for hot water or steam; very desirable for the filtration of inflammable liquid 5.00 2817(a) 2818 2818(a) 2817(a) FUNNEL, of tin, for hot filtration,' double wall, according to Plantamaur.$4.00 2817(b) FUNNEL, same as above, but made of copper 5.00 2818 FUNNEL, of copper, for hot filtration, according to Dr. Koch, single wall with legs 4.00 2818(a) FUNNEL, of copper, for hot filtration, according to Dr. Koch, double wall, with detachable legs 6.00 WE MAKE SHEET METAL FUNNELS of Special Design Please Submit Sketch of Your Requirements 154 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2820 2822 2826 2827 2820 FUNNELS, Porcelain, Straight Opening, Glazed With Handle. Size No i Diameter, mm 8 Each $0.30 2822 FUNNELS, Porcelain, Glazed, With Handle and Perforated Sides. Size No 123 Diameter, mm 110 130 160 Each $0.70 .90 1.50 2826 FUNNELS, Hirsch, with fixed, perforated plate. Size No 000 00 0 1 Diameter, mm 50 75 92 103 Height, mm 64 82 105 122 Dia. perforated plate, mm.... 36 44 57 59 Distance plate from rim 10 20 26 34 Each $0.60 .75 .90 1.20 2827 FUNNELS, Buchener, with fixed, perforated plate. Size No 0 1 2 2a 3 Diameter, mm 48 59 85 108 112 Height, mm 81 85 135 140 167 Distance plate from rim 20 25 38 43 33 Each $0.75 .90 1.50 1.95 2.10 2 120 .60 3 175 1.70 2828 2829 2830 2832 2833 500 4.00 2828 FUNNELS, Separatory, conical, Squibb's, with glass stopper. Capacity, cc 125 250 Each $2.50 3.50 2829 FUNNELS, Separatory, bell shape, 50 ec $2.50 2830 FUNNELS, Separatory, cylindrical. Capacity 60 125 180 250 Price, each $1.75 2.25 2.50 3.00 2832 FUNNELS, Separatory, cylindrical, graduated to 100 cc., with glass stopper. Capacity 60 125 250 500 1000 Price, each $2.50 3.75 5.50 7.50 9.00 2833 FUNNELS, Separatory, as above, not graduated. Capacity 60 125 250 500 1000 Price, each $1.50 1.75 2.25 3.00 4.00 LABORATORY SUPPLIES AND CHEMICALS 155 2834 2834 2835 2836 2836 (a) 2836(b) 2836(c) FUNNELS,- Separatory, globular, with glass stopper and long stem. Capacity, ounces 1 2 4 8 16 32 64 Each $1.50 1.75 2.25 2.75 3.25 4.50 7.50 2835 FUNNELS, Dropping, Walter's, for obtaining single drops. Capacity, 60 cc. Each $3.00 2836 FUNNELS, Separatory, globular, with glass stopper, of heavy glass. Capacity 250 500 1000 2000 4000 Each $3.50 4.00 5.50 ,8.00 12.50 2836(a) FUNNELS, Separatory, for the estimation of moisture in creosoted woods as used by the Forest Service of the U. S. Deparmtent, see circular No. 134 $4.00 2836(b) FUNNELS, Shaking, for the determination of Phenol in Creosote, as used by the Bureau of Animal Ind., U. S. Department of Agriculture, see Bulletin No. 107 5.50 2836(c) FUNNELS, Separatory, for sulphonation test of Creosote, as used by the Forest Service of the U. S. Department of Agriculture 4.50 2839 2840 2842 2844 2846 2848 2839 FUNNEL-TUBES, Conical top, light glass. Length, inches 10 12 15 18 Each $0.12 .15 .20 .25 2840 FUNNEL, Thistle top, thin blown glass. Length, inches 10 12 15 18 Each $0.10 .15 .20 .25 2842 Safety Tubes, plain, without bulb, thistle top . . .' $0.20 2844 Safety Tubes, one bulb in the bend,, thistle top 25 2846 Safety Tubes, two bulbs in the bend, thistle top '. ... 35 2848 Vogel's, with delivery tube fused on 75 156 A. DAIGGER & COMPANY, CHICAGO, U. S. A. FURNACES 2854 2856 2864 2854 2864 FURNACE, Brown.'s Assay. Size, 29 in. high, 16 in. wide by 14 in. deep; supplied with J Muffle, 4x6x12 in. The furnace burns charcoal or coke. Crucible fusions can be made in the open fire on top of the muffle, working through the feed door on top. The sectional fire clay lining is bound with heavy sheet iron. All doors and hingers malleable iron lined with asbestos. This is the most satisfactory prospecting furnace on the market, and, where necessary to carry on pack mules, any portion of the fire clay lining may be removed to divide the weight. Weight, complete, packed for shipment, with one muffle, 155 pounds '. $25.00 FURNACE, Brown's Assay. Same as above, but larger, supplied with LL. Muffle, 5a4x9xl5; size, 33 in. high, 22 in. wide by 19 in. deep. Weight complete, packed for shipment, 310 pounds. This is an ex- tremely satisfactory furnace. Price 45.00 FURNACE, Fletcher's Crucible, for gas. This furnace takes crucibles up to 4x3}/2 inches, holding 6 pounds, and with J^-inch gas pipe, and a pressure of gas equal to 2 inches of water, supplying about 50 feet per hour, melts a crucible of gold, silver or brass in 30 minutes, and as much cast iron in 60 minutes. It is made in a substantial manner, and is recommended to manufacturing jewelers, reducing photo waste, etc. The lid never gets too hot to be lifted by the handle; with 6 feet of pipe, crucible and tongs, complete, each 20.00 Prices of separate parts — Plumbago Crucibles, No. 3, each 1.00 Plumbago Cylinders, No. 15 2.00 Clay Crucibles, No. 3 25 Clay Cylinders, No. 15 50 Fire-clay Casing 3.50 Lid 2.00 Grate 1.50 No. 15 Burner 12.00 Wire Gauze Rings, each 25 Furnace may be operated with illuminating gas, natural gas or gaso- line gas without alteration. LABORATORY SUPPLIES AND CHEMICALS 157 2866 2868 2866 FURNACE, Fletcher's Monitor. A form of Gas Assaying Furnace, sug- gested by Walter Lee Brown. In this furnace the flame rises from the burner, shown on the left of the engraving, and passes horizon- tally through the body of the furnace to the chimney. The exterior dimensions are 20 inches long, 7 inches wide, and 5l/2 inches deep. As there is no direct heat under the floor of the furnace, a platform is furnished on which scorifiers or cupels are placed. The heat pass- ing under as well as over the platform, the articles placed thereon are heated quickly and evenly. The Monitor, as represented in cut.. $20.00 Prices of separate parts — Fire-clay Slabs for covers, each $ 0.50 Body of Furnace 8.50 Platform 15 Supports for Platform, each 05 Tripod 50 No. 16 Burner 9.00 Chimney Pipe, per length 35 2868 FURNACE, Fletcher's Muffle, a gas furnace for assaying, enameling, and all purposes where exact temperatures are required, not exceeding the melting point of copper. Size No. 3, with No. 15 burner. Inside muffle space, 3x4x2^ in. high. Requires ^-in. bore gas pipe and tap. Clay parts, 734x734x8 in. Inside space, 5J4x534x5}4 in. high. From table to top of lid, 16 in. Weight, as illustrated, 60 Ibs 20.00 2870 FURNACE, Fletcher's Muffle. Size No. 4, with No. 4 burner. Inside muffle space, 3^x5^x3 in. high. Requires 34-in. clear bore gas pipe and tap. Clay parts, 10x9x11 in. Inside space, 7^x6^x534 in. high. From table to top of lid, 19^ in. Weight, as illustrated, 88 Ibs 26.00 2872 FURNACE, Fletcher's Muffle. Size No. 5, with No. 5 burner. Inside muffle space, 4^x6^x4 in. high. Requires 1-in. pipe and tap. Clay parts, 1124x1034x14 in. Inside space, 834x734x634 in. high. From table to top of lid, 23 in. Weight, as illustrated, 145 Ibs 40.00 2874 FURNACE, Fletcher's Muffle. Size No. 6, with No. 6 burner. Inside muffle space, 6x8J^x4/^ in. high. Requires 1-in. clear bore gas pipe and tap. Clay parts, 14xl5J4xl7J4 in. Inside space, 10^4x9^x8^4 in. high. From table to top of lid, 27 % in. Weight, as illustrated, 225 Ibs 50.00 158 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2877 2877 FURNACE — Crucible, with improved gas burner. The burner is almost noiseless in its action, and works with a very small gas supply, pro- ducing much more economical results than an.y gas burner heretofore used for the purpose of heating furnaces. Gas supply pipe required, 5^ inch. The amount of air and gas used by this furnace is very small. Care should be taken that the right proportion of each is used. A steady blast of air will give the best results. No. 9a or No. lOa Foot Blower is recommended for this furnace; takes No. 00 Crucible. No. 40a Crucible Furnace, with one No. 00 Crucible, without Foot Blower $5.00 Extra Burners ...... 2.25 2878-80 2882 2878 FURNACE, Fletcher's Perfected Injector gas furnace, for metallurgists, jewelers, chemists, manufacturers of artificial gems, and other pur- poses where an ordinary furnace is useless or unreliable. Takes No. 1 crucible, holding 2 pounds of metal. Without foot-blower $ 6.00 2880 FURNACE, Fletcher's Perfected Injector, taking No. 3 crucible holding 6 pounds of metal. Without foot-blower 8.50 2882 FURNACE, Fletcher's Perfected Injector. Combined Crucible and Muffle Furnace, for gas. This is supplied with muffle fittings, and can be used either as a crucible or muffle furnace. The body of the furnace is large enough to receive a No. 6 crucible, holding 12 pounds of metal. The cover has a projection one side, which reduces the height of the inside of the furnace to the proper size to receive the muffle or a No. 3 crucible. By reversing the cover, a No. 6 crucible may be used. Takes a muffle 3^x2^x6^4 inches. Complete, without foot- blower 14-°° Use the No. 9B or 10 B foot-blower with this furnace. The gas sup- ply must be from a ^-inch or, better, a -K-inch pipe. LABORATORY SUPPLIES AND CHEMICALS 159 FURNACE CASE GAS MUFFLE PATENTED 2883 2883 FURNACE Case Gas Muffle, Patented. Prices include furnace, iron stand, motor, blower and burner. In fact, the whole equipment complete for running. Floor space dimensions signify all space necessary for complete installation of furnace in running order. Size of muffle, 10xl6x5j4 in. Capacity, fifteen 15-gramme, or twelve 20-gramme crucibles. Shipping weight, 620 Ibs.; iron stand, 140 Ibs.; motor blower, 150 Ibs.; floor space, 21x26 in. 2885 2885 FURNACE, Muffle. Highest heat can be obtained without using blast burners. Inside measure of muffle, 7x4^x3 inches high. Complete with our No. 2135t four Meker burner No. 3 in one row $30.00 FURNACE, Muffle. Same as No. 2885, but larger. Inside measurements of muffle, 9x6x4 inches high. Complete with six Meker burners No. 4 on one supply pipe 40.00 160 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2887 2909 (a) 2887 FURNACE, Wiesnegg's. For ash determinations, etc. Inside measure- ments of muffle, 524x4x2^4 inches high. Complete with one muffle and four No. 4 Meker burners on one supply pipe $30.00 2909(a) FURNACE, Combustion, Glaser's, modified by Anschuetz and Kekule, with mica plates so that the burner flames may be watched. The burners are on a sliding frame. Complete with clay parts. Length, inches Number of burners 15 10 23 16 30 21 36 26 Each $30.00 40.00 50.00 6Q.OO Extra Top Clays for above, each 25 Extra Side Clays for above, each 25 Extra Gutters, each 15 2910 2910 FURNACE, Combustion, Bunsen, each burner with separate stopcock and air regulator. Complete with clay parts. Length, inches Number of burners 14 10 10 15 25 20 31 25 Each $18.00 24.00 30.00 36.00 Extra Clay Tiles for above 15 Extra Clay Gutters for above ,..,.., 45 LABORATORY SUPPLIES AND CHEMICALS 181 2914 2914 FURNACE, Combustion, Fletcher's. The burners are on the outside of the furnace in front and are clear from falling dirt. There is no iron work to rust, brass being the only metal used in the furnace. Length, inches 12 24 Each $30.00 60.00 Extra cover blocks, each $0.50 2915 2915 FURNACE, Combustion, Fletcher's, for very high temperatures. Heats a 1-inch iron tube to softness in ten minutes, requiring for this purpose a foot blower or other blast. It may also be used without blast, when ordinary high temperatures are desired. Length, inches 12 18 24 For blast, with adjustable flame length $15.00 20.00 22.50 As above, without adjustable flame length 13.00 18.00 20.00 162 A. DAIGGER & COMPANY, CHICAGO, U. S. A. FURNACES— HOSKINS' ELECTRIC TYPE FD These furnaces, Type FD, are designed for industrial and laboratory purposes. Their construction eliminates all the shortcomings commonly found in wire-wound electric furnaces. Attention is particularly called to the fact that all parts of this furnace which require renewals are very easily accessible and can be replaced by the operator himself. No part of this furnace need be returned to the factory when in need of repairs. The heating unit is surrounded by bonded kieselguhr, backed up with asbestos and magnesia slabs. It is believed that this insulation is the most efficient that is available and it is responsible for the low power consumption of this FD line. The door of the furnace is of the sliding type and has an adjustable counterbalance, which causes the door to remain open at any desired point or close automatically. Construction — The heating element in these furnaces is of heavy Chromel "A" wire, wound in spiral coils. The refractory, around which this wire is wound, has spirally built ribs on its surface, which give the walls of the heating-chamber a greater strength, and at the same time the spaces between these ribs act as grooves in which the wire is wound and is thus automatically and properly spaced. Temperature — The maximum safe operating temperature of the FD Furnace is 1830° F. (1000° C). The minimum temperature that can be maintained with the standard rheostat is about 900° F. (480° C.). With special rheostats, they can of course be operated at lower temperatures, with the exception of the Tube Furnace. Operation — Hoskins Furnaces, Type FD, are built for 110 or 220 volt circuits, alter- nating and direct current. Special windings will be made for any voltage between 100 and 300. All styles require the use of a rheostat, which is the only auxiliary apparatus required. 291G(a) 291G(b) 2916 (a) FURNACE— Hoskins' Electric (Type FD), No. 101. Crucible chamber style, as shown; may be titled on its side and used for a small muffle. Particularly for making crucible combustions, incinerations and melting alloys within temperature range of furnace. Includes 6 feet twin connector, cord and attachment plug. Type and Number Size of Heating Chamber Furnace Only Refractory Furnace and without Rheostat wire Chromel Wire for winding FD-101 . . .2" dia. x 2^2" deep $20.00 28.50 1.00 1.50 103 . . . 4" dia. x 4 " deep 40.00 52.00 3.00 6.00 104.. ..5" dia. x5 "deep 60.00 72.00 5.00 8.00 2916(b) Recalescent Outfit — The apparatus shown in 2916(b) is used for deter- mining the "critical points" of high carbon steels. It consists of Hoskins Type FD-101 electric furnace, with controlling rheostat, and Type PA Portable Meter and thermo-couple Type P-402, complete with handle and 10 feet of flexible leads $74.50 163 2916(c) 2916 (d) 2916(c) FURNACE, Hoskins' Electric (Type FD), Muffle chamber style. (See general description under Type FD, particularly for ash determinations, ignition of precipitates, incinerations, fusions, combustions; for enameling, harden- ing and annealing of small metal parts.) Included with each furnace is a six-foot twin connector cord with attachments. Larger Sizes — The sizes designated by FD-206 and 207 are equipped with an iron stand, which puts the furnace shelf about 40 inches above the floor. The FD-206 and 207 are wound with three parallel circuits, the rheostat being in one of them. The three circuits allow very close temperature con- trol, any temperature between that of the room and 1000° C. being easily maintained. Type and Number FD-201 Size of Heating Chamber WxHxL Furnace Only $ 45.00 Furnace and Rheostat 55.00 Refractory without wire 6.00 Chromel Wire for winding 5.00 202 4J4"x3 "xlO" 60.00 72.00 9.00 8.00 203 80.00 96.00 12.50 13.00 204 7J/"x5J/"xl4" 110.00 137.00 18.50 19.00 206 12 "x8 "x!9" 285.00 312.00 27.00 30.00 207 12 "x8 "x26" 340.00 390.00 36.00 45.00 2916 (d) FURNACE, Hoskins' Electric Combustion, for rapid determination of carbon contents of steels by the direct method. The fact that these furnaces are in use in the largest and busiest steel laboratories should convince you that they are proving entirely satisfactory. Type and Number Refractory Chromel Size of Heating Furnace Furnace and without Wire for Chamber Only Rheostat wire winding FD-302 l%" dia. x 12" long $25.00 33.50 3.00 3.50 2916(e) FURNACE, Multiple Tube (Type FD-235). This furnace fills the same pur- pose as the FB-235. They differ in their type of heating elements. In this furnace five carbon combustions can be run simultaneously, at one-fifth the attention, about one-third less cost, in one-third the space and lower up-keep cost, compared with five single tube furnaces. Also built in the heavier FB Type for continuous service day and night. Type and Number Size of Heating Chamber Furnace Only Refractory Furnace and without Rheostat wire FD-235 5 holes, 1J4" d. x 12" 1. $80.00 96.00 13.00 Chromel Wire for winding 13.00 164 A. DAIGGER & COMPANY, CHICAGO, U. S. A. TYPE FB— FURNACES 110-220-440 VOLTS Hoskins Type FB Electric Furnaces are for work requiring temperatures up to 1100° C. (2000° F.). They are especially adapted to heavy duty or continuous operation, and are capable of twenty-four-hour-per-day service if required. The heating units of all Type FB Furnaces can be removed and replaced by the operator within a few minutes. Temperature — The maximum working temperature of all Type FB Furnaces is 1100° C. (2000° F.). The minimum temperature at which the rheostat-controlled fur- naces can be maintained (after having come up to heat) varies between 316° C. (600° F.) and 536° C. (1000° F.) for the different designs. The Types FB 204 to 235 inclusive can be maintained at any temperature between that of the room, in which the furnace is operating, and 1100° C. (2000° F.). Operation — Type FB Furnaces operate on low voltages (10 to 67.5 volts), for which reason they are best adapted for use on alternating current circuits in connection with a transformer. They are regularly supplied for use on 110, 220 or 440 volt, 25 or 60 cycle lines, but can be supplied for other voltages and cycles at prices which will be quoted on application. Temperature regulation of the Types FB 204 to 235, inclusive, is by means of regulating transformers; the types of smaller power in-put are con- trolled by means of rheostats. Power Consumption — None of the furnaces described in this bulletin, of course, draws the full load except when heating up. Once up to heat, they operate on a greatly reduced current, in some cases less than half the maximum. !91G(f) 291G(g) 2916(b) FURNACE, Hoskins' Electric (Type FB). Crucible chamber style. Espe- cially adapted to use in analytical laboratory work. Transformer Furnace and Complete Equipment Type and Number Size of Heating Chamber FB-102 . . ......... 2" dia. x 2J 105 ........... 4" dia. x 6 " deep " deep Furnace Only $25.00 60.00 Rheostat 60 cycle 25 cycle 60 cycle 25 cycle 12.00 16.00 26.00 45.00 40.00 62.50 63.00 121.00 77.00 138.00 2016(g) FURNACE — Hoskins' Electric (Type FB). Muffle chamber style (see gen- eral description under Type FB). Particularly for ash determinations, igni- tion of precipitates, incinerations, fusions, enameling, hardening and annealing, melting metals and alloys and a great variety of other uses. Transformer Furnace and Complete Equipment ype and lumber Size of Heating Chamber WxHxL FB-202 4^"x3"x 9 204 7^"x5"xl2j4" 205 12 "x5"x!2^" 206 12 Wx8"xl9 207 12 "x8"x26 208 12 "x8"x33 " Furnace Rheostat 60 cycle 25 cycle 60 cycle 25 cycle Only $ 90.00 16.00 52.50 72.50 158.50 178.50 125.00 None 157.50 197.50 282.50 322.50 210.00 None 180.00 225.00 390.00 435.00 285.00 None 234.00 280.00 519.00 565.00 340.00 None 272.50 332.50 612.50 672.50 400.00 None 310.00 385.00 710.00 785.00 LABORATORY SUPPLIES AND CHEMICALS 165 HOSMNS ELECTRIC COMBUSTION FURNAC*" < 2916(h) FURNACE— He-skins' Electric (Type FB 302). Tube chamber style. (See gen- eral description under Type FB). Furnace and Complete Transformer Equipment Type and Size of Heating Furnace Number Chamber Only Rheostat 60 cycle 25 cycle 60 cycle 25 cycle FB-302 1*4" dia. x 11" long $30.00 12.00 26.00 40.00 68.00 82.00 2916(j) FURNACE, Multiple Tube Combustion Furnace (Type FB-235). This furnace is of great convenience and economy where a large number of carbon determinations are to be made, using the direct combustion method. Five carbon combustions can be run simultaneously, and in approximate terms, at one-fifth the attention, one-third less space and correspondingly lower up-keep cost than that represented by five single tube furnaces of the same capacity. The combustion tubes are heated by direct radiation from the "hair- pin" heating units, between which the tubes lie. Temperature regulation is accomplished by means of a regulating transformer. This furnace is also made in the FD type. See No. 2916(e). Furnace and Complete Transformer Equipment Type and Size of Heating Furnace Number Chamber Only Rheostat 60 cycle 25 cycle 60 cycle 25 cycle FB-235 5 holes, 1J4" d. x 12" 1. $125.00 None 157.50 197.50 282.50 322.50 2916(k) 2916 (k) FURNACE CORES, Alundum. For the construction of small wire resistance electric furnaces Alundum refractory cores meet the criteria of the most efficient material for this purpose. The resistor should be spiralled and wound and then embedded in Alundum cement. Thus, fully protected, the wire does not corrode under the most severe conditions, since the Alundum mixtures are chemically inert. In addition to this the core has high heat conductivity and does not become an electrical conductor even at the highest temperatures obtained in the furnace.* Those listed below we aim to carry constantly in stock. Special sizes and styles made to order. No 6917 Bore, inches 1 Depth, inches 10 Pitch, inches 1/9 Each $3.75 *One end closed. 6271 6916 6366 *6597 *6601 1* 2 3^ 3 5 12 10 5 7 9 A 1/9 A A A 4.00 4.00 4.00 4.00 6.00 166 A. DAIGGER & COMPANY, CHICAGO, U. S. A. FURNACE CEMENT— HYTEMPITE Hytempite is a high temperature fire brick cement which has proven of great value in the laying of firebrick and in the general repair of all types of furnaces, retorts, ladles and so forth. It is a scientifically compounded refractory plastic material and forms a lasting union between the materials to be joined, retaining its strength regard- less of the heat to about 3100° F. It is better than fire clay because fire clay and water has no binding strength. It does not loosen with expansion or contraction. Hytempite withstands the cutting action of the flames and is especially recommended for oil furnaces. It is largely used, also, as a coating or wash or to smoothen and harden the surface of a lining to protect it from abrasion. In 25, 50, 100 and 225 pound kegs and in barrels of 800 pounds. Also furnished in ton lots with prices on application. Below is illustrated a typical test of a firebrick broken, repaired with HYTEMPITE and then re-broken. Note the last illustration, showing location of new fracture. The Break (see note) The Test (see note) NOTE.— The brick illustrated was broken and repaired with HYTEMPITE, sub- jected to a high temperature, and upon being tested fractured as shown, proving the repair stronger than the brick structure. Prices on application. 2916(e) FURNACE CEMENT. Alundum cement is recommended for use in con- nection with Alundum muffles, cores, and wherever a refractory cement with high thermal conductivity is desirable. It has the same general proprieties as the refractory article and is furnished in the form of a dry powder, which, when mixed with sufficient water to make a thick paste, is ready for application. The material should be allowed to dry and finally heated to a good red heat. In burning, the heat should be raised as high as possible, as this will give the cement a body similar in character to the refractory article. Price in 1-lb. lots. Per Ib $0.30 Price in 5-lb. lots. Per Ib 15 Price in 25-lb. lots. Per Ib 10 Prices for larger quantities on application. LABORATORY SUPPLIES AND CHEMICALS 167 2917 2918 2918(b) 2917 FUSEL OIL — Determination Apparatus, Rose's, for 20 c.c. chloroform and 100 c.c. alcohol, graduated in 1/10 c.c $5.00 2918 FUSEL OIL — Determination Apparatus, Rose-Herzfeld, for 20 c.c. chloro- form and 100 c.c. alcohol, graduated in 1/20 c.c 5.00 2918(a) FUSEL OIL — Determination Apparatus, as above, for 50 c.c. chloroform and 250 c.c. alcohol, graduated in 1/20 c.c 6.50 2918 (b) FUSEL OIL — Determination Apparatus, Bromwell's, with stop-cock and glass stopper. See Bureau of Chem. Bulletin No. 107 of U. S. Depart- ment of Agriculture 6.75 LABORATORY FURNITURE The laboratory is becoming more and more a factor in education, in the profession, and in the trades. We furnish laboratory furniture not only for educational institutions, but for private experimental and clinical laboratories, such as meet the needs of physicians, commercial chemists and pathologists. We use the best grade of lumber in the manufacture of our furniture. It is kiln dried by the most modern process known. We furnish all the plumbing complete to the floor line ready to be screwed together and connected Plans showing the exact location of the different outlets should be -obtained before the floor pipes are laid. All sinks and gutters furnished in connection with our laboratory furniture are made from lJ4-inch soapstone. This stone has no equal. It will withstand the action of acid better than any other known sub- stance. While it is impossible to list all types of Laboratory Furniture we list at least representative ones of Laboratory Tables for Students' and Professors'. use for Bacteriological and Industrial purposes and Chemistry Fume Hoods and Balance Tables. We also are capable of furnishing Museum Cases and Cabinets of various kinds, for Fun- nel and Burette Supports, etc. (See under alphabetical classification throughout the catalog.) 168 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2918(c) STUDENTS' CHEMISTRY LABORATORY TABLE ARRANGED TO ACCOMMODATE 16 STUDENTS WORKING IN SECTIONS OF 8 This table has proved to be one of the most practical for average chemical work. A gutter runs the full length of the table and drains into the sink at the end, as shown in illustration. All the plumbing is exposed and furnished complete to the floor line. This table gives each student one large and one small drawer and one cupboard. We furnish the table in any length required. SPECIFICATION SIZE— 12' long, 4' wide, 3' high. TOP — Soapstone 1%" thick, or birch 1J4" thick. When wood top is furnished, it is treated acid proof. GUTTER — Soapstone or lead lined, draining into sink at end of table, 5^" wide x 2" deep in upper end, slanting down to 5" at the sink. SINK — Soapstone, 10^"xl4"xl8", equipped with standing removable overflow and extra heavy lead waste jtrap. WATER — Four nickel plated compression water cocks with detachable hose nipples. By removing the detachable hose nipples, a Richard's aspirator can be attached. We also furnish one Y^'y^A" reducer for the use of a Chapman aspirator. The end water c'ock is threaded for regular 54" hose connection. GAS — Four two-way gas hose cocks, eight outlets. Water and gas plumbing is com- plete to floor line. RE-AGENT SHELVES — Made with retaining rims, and are treated acid proof. DRAWERS — Lap front, in order to exclude dust as much as possible. DOORS — Panel and lap front. LOCKS — Forty-eight master keyed mortise locks in^sets of three. This arrangement gives each student one large drawer 15^2"x9"x9^" deep, one smaller drawer 15Ji"xll"x4" deep, and one cupboard 15J4"xl7"xl8", with shelf in center. MATERIAL — Exposed parts below top are plain oak. FINISH— Antique (or any other shade when so ordered), with three coats of varnish and rubbed. WEIGHT— Crated, with stone top, 2,700 Ibs.; with wood top, 2,000 Ibs. Prices 2918c/l With stone top and master keyed mortise locks $330.00 2918C/2 With stone top, but without locks 282.00 2918C/3 With wood top and master keyed mortise locks 305.00 2918C/4 With wood top, but without locks 257.00 LABORATORY SUPPLIES AND CHEMICALS 169 2918 (d) This table is often used in pathological and industrial laboratories. The sinks at the ends of the tables are large and are built inside the table. The spaces on the sides of the sinks furnish ample room for practical use. There are four pull shelves. The plumbing is exposed, with the exception of connections, which are inside the table and accessible. THIS TABLE IS FURNISHED IN ANY LENGTH REQUIRED. SPECIFICATION SIZE— 15' long, 4' wide, 3' high. TOP — Soapstone, 1J4" thick, or birch treated acid proof. GUTTER — Soapstone or lead lined, 5J the sinks. 1^4" thick. When wood top is furnished, it is " wide x 2" deep at center, slanting to 5%" at SINKS — Two soapstone sinks, each 18"xl8"xl2" deep, with standing removable over- flow and extra heavy lead waste traps. WATER — Four nickel plated compression water cocks with detachable hose nipples. By removing the detachable^hose nipples, a Richard's aspirator can be attached. We also furnish one H"xJ4" reducer for the use of a Chapman aspirator. The two end water cocks are threaded for regular 24" hose connection. GAS— :Four two-way gas hose cocks, eight outlets. Water and gas plumbing is fur- nished complete to floor line. RE-AGENT SHELVES— Made with retaining rims, and are treated acid proof. PULL SHELVES— Four, two on each side. DRAWERS — Lap front, in order to exclude dust as much as possible. DOORS— Paneled and lap front. LOCKS — On drawers and cupboards, when so ordered. MATERIALS — Exposed parts below top are plain oak. FINISH — Antique (or any other shade when so ordered), with three coats of varnish and rubbed. WEIGHT— Crated, with stone top, 2,700 Ibs.; with wood top, 2,000 Ibs. Prices 2918d/l With stone top, but without locks ..................................... $350.00 2918d/2 With wood top, but without locks ..................................... 320.00 Locks extra, each ......................... 1.00 170 A. DAIGGER & COMPANY, CHICAGO, U. S. A. CHEMISTRY FUME HOOD This fume hotfd is similar in construction to our No. 1095, with the exception that it has only one compartment. In many laboratories one of these hoods is placed in each corner of the room. Six square feet are required for each hood. Plumbing is complete to floor line. This hood is regularly furnished single as illustration, although two of any number of sections may be had. SPECIFICATION SIZE— 3' long, 9' high, 2' deep. TOP — Soapstone I1/*" thick. CONSTRUCTION— One compartment, 3'x2'. DOORS — Lift door (with double strength glass), balanced on weights. Best bronze chain used. BACK — The hood has no back. It is built to be fitted against the wall. We furnish them with back when so ordered. GAS — Two gas hose cocks placed as illustrated. Plumbing is complete to floor line. MATERIAL — Exposed parts are oak. FINISH — Antique (or any other shade when so or- dered), with three coats of varnish and rubbed. WEIGHT— Crated, 300 Ibs. Prices Without back $75.00 With back 85.00 2918F Special sizes made on short notice. This table is often used in professors' private offices, pathological and industrial laboratories. It is equipped with soapstone top, trough and sink. It has a single re-agent shelf treated acid proof. The table is 8' long, 2' 6" wide, 3' high. Gas, water and waste furnished complete to floor line. Price F. O. B. Chicago No. 2918F $160.00 LABORATORY SUPPLIES AND CHEMICALS 171 2918 (g) BALANCE CASE AND WALL TABLE SPECIFICATION SIZE — 11' 8" long x 2' wide. Table is 32" high. Each compartment measures inside 32" wide x 19" deep x 30" high. MATERIAL AND CONSTRUCTION— Working top is 1^4" thick birch, matched and glued. Legs are held in place by braces and bolts. The case and the lower part of the table are constructed of plain oak. The back is paneled. The doors are supported on spring balances. Glass in doors, ends, partitions, and top is double strength A. A. The handles are solid brass. FINISH — The working top is finished black and oiled. All oak is finished antique (or any other shade when so ordered), with one coat filled and three coats varnish, rubbed. WEIGHT— Crated, 800 Ibs. Prices Containing four compartments $132.00 Containing two compartments 67.00 Special Laboratory Furniture made to order. Please submit your plans to us for our prices and suggestions. 172 A. DAIGGER & COMPANY, CHICAGO, U. S. A. GAS ANALYSIS APPARATUS 2920 2921 2921(b) 2920 GAS APPARATUS, Orsat Lunge's, for flue and furnace gases, for analysis of COa, CO, O and H consisting of four absorption pipettes, tube with 5 stopcocks, gas measuring tube with water jacket and aspirator bot- tle, in portable wooden case ..$40.00 For extra parts see 2921 (a). 2921 GAS APPARATUS, Orsat-Muencke's, for flue and furnace gases, for analy- sis of CO2 CO, O and H consisting of four absorption pipettes, tube with 5 stopcocks, gas measuring tube with water jacket and aspirator bottle, in portable wooden case 30.00 For extra parts see 2921 (a). 2921(a) GAS APPARATUS, Separate parts for Nos. 2920-2921. Measuring tubes with jacket for any of above 6.00 Tube with 5 stopcocks for No. 2920 11-00 Tube with 4 stopcocks for No. 2921 10.00 Pipettes, filled with glass tubes and copper spirals, with ground in glass stopper 6.00 Pipettes, filled with glass tubes 4-00 Pipettes, plain 3.50 Soft Rubber Bags, for attaching to Orsat Pipettes 60 Aspirator Bulbs of Rubber with two valves, and rubber connections.. 1.00 Aspirator. Bottles 2.00 N. B. — The above prices are for parts which fit the apparatus which we sell; special sizes we can make to order at reasonable prices. State apparatus wanted for. 2921 (b) GAS APPARATUS, Orsat Muencke's, Petrzilka modification, with large universal stopcock, dispensing with four smaller ones, in portable case , 50.00 Extra Stopcocks for above 18.00 LABORATORY SUPPLIES AND CHEMICALS 173 2923 2923 DUST, TAR and Moisture Determination Apparatus, consisting of a test meter, across the top of which is fixed a brass pipe which serves as a flue for the gases to be tested, as well as a support for the filter holders. Each holder is separated by loosening the thumbscrews, and the filter paper through which the gas passes may be inserted or removed without disarranging the operation or adjustment of the other parts. An electric light in the clean side of the filter holder keeps any moisture in the gas sufficiently volatile to prevent disruption of the filter paper. To the filter holders are attached the calcium chloride beakers to absorb the moisture, and a manometer and 'thermometer on the meter permit reductions of metered to standard gas. Complete with meter $200.00 Single dust filter without meter 50.00 2025 2926 2927 2925 GAS BURETTE, Bunte's, with two stopcocks $ 9.00 2928 GAS BURETTE, Bunte's, with support, reservoir and rubber connections.. 15.00 2927 GAS BURETTE, Elliott's, for analysis of furnace and illuminating gases; complete with reservoirs and rubber connections 20.00 174 A. DAIGGER & COMPANY, CHICAGO, U. S. A. f=? f? FT 292 7 (a) 2927 (b) 2927 (a) GAS BURETTE, Morehead's (patented), as used by the Peoples Gas Light and Coke Co. and others. This Burette, while sacrificing none of the accuracy possessed by the Hempel, Orsat or Mclntosh-Elliott very greatly decreases the time necessary for an analysis. A complete analysis of coal, water, natural fuel, producer, acetylene, or gasoline gas, comprising determinations of any or all of the following constituents, carbon dioxide, illuminants, oxygen, carbon-monoxide, methane, hydrogen and nitrogen, can be made in from twenty to twenty-five minutes. The saving in time is effected by the elimination of the necessity of shifting the gas from one portion of the apparatus to another. With each outfit we send a 20-page treatise by Mr. Morehead on Industrial Gases, giving full direc- tions for using the apparatus. A. The complete apparatus with support aspirator bottles and rubber tubing as illustrated $28.00 B. The Burette only, with storage bulb 17.50 C. The complete apparatus with support, etc., as illustrated, but the burette supplied with water jacket for securing constant tempera- ture 37.50 D. The Burette only, supplied with water jacket and storage bulb. . 24.00 E. The Storage Bulb only : . 3.00 F. Induction Coil, %-inch spark 6.50 G. Metal Gas Holder, No. 2955 3.25 H. Copy of "Industrial Gases," by J. M. Morehead 25 2927 (b) GAS APPARATUS, United States Steel Corporation Official Apparatus, for the technical analysis of gases. The special features of this appa- ratus are the accessibility of the auxiliary gases and the central loca- tion of the burette, thus decreasing the error due to the capillary space. The apparatus, as illustrated, mounted on stand, complete with metal sampling tube 50.00 Individual Parts: Tube with stopcocks 10.50 Explosion Pipette 5.00 Liquid Reagent Pipettes. Each 6.50 Solid Reagent Pipettes. Each 5.00 Burette with jacket, complete . 10.50 LABORATORY SUPPLIES AND CHEMICALS 175 2933 2934(a) 2936 2934 2933 GAS BURETTES, Hempel's, graduated to 100 cc. in 1/5 cc. mounted on heavy iron japanned bases with wooden ipllars, complete, per set. .^ The graduated burette only 2934 GAS BURETTES, Hempel's, as above, but with plain and 3-way stop- cocks in graduated tube, complete, per set The graduated burette only 2934(a) GAS BURETTES, Hempel's arranged for temperature and barometric correction, complete as illustrated Glass parts only 2936 GAS BURETTES, Winkler's, measuring tube divided in 1/5 and its lower part in 1/20 cc. With fittings and support complete The measuring tube and filling tube only The measuring tube only 5.00 2.50 7.50 4.50 17.50 12.00 15.00 10.00 6.25 2942 2943 2912 GAS PIPETTE, Hempel's, simple absorption, for liquid reagents, mounted. $ 3.60 2943 GAS PIPETTE, Hempel's, compound absorption, for liquid reagents, mounted .... 5.00 176 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2944 2945 2944 GAS PIPETTE, Hempel's, simple absorption, for solid reagents, mounted. .$3.50 2945 GAS PIPETTE, Hempel's, compound absorption, for solid reagents, mounted . 5.00 2946 2947 2946 GAS PIPETTE, Hempel's, sulphuric acid, with glass, mounted 5.00 2947 GAS PIPETTE, Hempel's, for explosion, simple, with stopcock and plat- inum electrodes, mounted 5.75 2949 2949 GAS PIPETTE, Hempel's, explosion, new form, with leveling bulb 7.50 2950 GAS PIPETTE, Hempel's, for hydrogen, simple, mounted 5.00 LABORATORY SUPPLIES AND CHEMICALS 177 2954 2952 GAS 2954 GAS 2955 GAS 2952- 2955 GAS GAS GAS GAS 2955a GAS, 2955b GAS, 2955c GAS, PALLADIUM TUBE, Hempel's, for absorption of hydrogen, filled with palladium black $5.00 to 10.00 COLLECTING TUBES, of glass, plain, with stopcock at each end. Capacity 100 250 500 cc Each ; $3.50 4.50 5.00 COLLECTING TUBES, Winkler's, of zinc, with two stopcocks; for collecting and holding gas samples; 12 inches long," 4^ inches di- ameter $3.25 BULBS, Chancel's and Dumas', see Bulbs. BAGS, see Bags. BALLOONS, for weighing gases, see Balloons. BOTTLES, Washing, see Bottles. Ammonia, Anhydrous Ammonia, liquified, in 35 and 100-lb. cylinders, Ib. $0.50 Carbonic, liquefied, in 18-lb. cylinders, Ib 25 Chlorine, liquefied, in cylinders of 100 Ibs., Ib .25 2955d 2955e 2955d GAS CYLINDERS, Steel, tested to 600 Ibs. hydrostatic pressure. The capacity is based on a pressure of 225 pounds, at which pressure the cylinders are filled by us. The price includes a brass name plate engraved with name am1 address and the McLahlan patent double needle- valve. Cubic feet 25 40 50 Each $20.00 25.00 30.00 Cylinders filled with pure Oxygen Gas, per cubic foot $ 0.12^2 2955e GAS, Oxygen, in seamless steel cylinders, under a pressure of 1,800 pounds per square inch. 40 gallon (cylinder, $7.50; Gas, 2.50) 8,25 100 gallon (cylinder, $12.00; Gas, 5.00) 17.00 Wheel key and yoke for rubber tubing 1.75 N. B. — We allow full price for empty cylinders if returned in good order within a reasonable time. Wheel key and yoke not returnable. 2955f GAS, Sulphur Dioxide, liquefied. In 20-oz. tins, each $0.50 In 6-lb. iron cylinders, each 6.00 Cylinders and tins not returnable. 178 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2956 2958 2956 GAS Collecting Tubes. Style a, $0.35; Style b, .35; Style c, .50 2958 GAS Collecting Tube, Schroetter's .$0.50 2960 2960(a) 2961 (a) 2960 GAS DISTRIBUTOR, with four side tubes and one center burner, -all with stopcocks $7.00 2960(a) GAS DISTRIBUTOR, same as above, but with one center burner 6.00 2960(b) GAS DISTRIBUTOR, with three outlets, and one center burner, all with stopcocks , 6.00 2961 GAS DISTRIBUTOR, same as above, but without center burner 4.75 2961 (a) GAS DISTRIBUTOR, two outlets, with stopcocks 3.75 2962 296c 29G3(a) 2962 GAS GENERATORS, gas bottles, fitted wtih rubber stopper, thistle tube, and delivery tube. Capacity, ounces 4 8 16 32 Each $0.50 .60 .70 .80 2963 GAS GENERATOR. As above, with tubes ground into the neck. Pint size, each $2.50 2963(a) GAS GENERATOR. Consisting of generating bottle, funnel tube, lead basket and delivery tube with pinchcock. Quart size, each 2.00 LABORATORY SUPPLIES AND CHEMICALS 179 2963-4 2963-1 2963-3 2963-1 GENERATOR— Parson's Automatic, for H2S, CO2 and H. This is the most popular generator for large requirements; used by the majority of edu- cational laboratories throughout the country to distribute HzS to labora- tory classes. The apparatus is perfectly automatic in action, and the refuse is auto- matically removed, while the pressure is almost constant. Only fresh acid comes in contact with the solid reagent, so that the full strength of the acid is utilized. There are no stoppers or valves, the apparatus being con- trolled entirely from the exits. It requires practically no attention, is easily cleaned and refilled without being taken apart. Forty outlets flow- ing at the rate of two bubbles every second can be furnished by one apparatus. Most instructors prefer exits for use with hydrogen sulphide to be situated in the hoods; the rubber connection containing a small piece of capillary tubing, being concealed behind a block, screwed to the wall; thus the student sees only a rubber tube protruding from a hole, and being unaware that his supply is limited by the size of the capillary, has no means of increasing the supply. Waste is thereby avoided. Generator of light yellow acid proof stoneware, complete with the necessary glass parts and rubber stopper $25.00 Crates and packing extra, 1.50 Special globular iron sulphide, free from dust, for use with this generator; in lots of 25, 50 and 100 pounds respectively per pound, net, .20 Lead Piping, with series of outlets for hood. Price according to number of outlets and distance. Renewals—- Bottle A 3.50 Pot B 4.50 Tower C 15.00 Pot D 3.50 Disc 75 Non-syphoning tribe 50 2963-2 Ditto— For Chlorine, and other gases. Of best acid proof stoneware, with air tight covers ground on. Capacity, gallons ' 6 12 20 25 33 39^ Each '. $4.50 6.50 10.00 12.00 13.50 17.50 2963-3 Ditto, With inside vessel 5.60 8.00 12.00 14.20 17.00 22.00 2964-4 Ditto — For Chlorine. Of best acid proof stoneware, with perforated ground stoppers. Capacity, gallons 14 /4 /^ 1 1/4 Each $1.50 1.80 2.20 3.00 4,25 180 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2964 2966 2964 GAS Generator for sulphuretted hydrogen, according to Dr. C. B. Dudley, of the Penna. R. R. Company. The iron sulphate is packed in the upper part of the jar. The flow of hydrochloric acid from the bottle is regulated by the glass stopcock, and becomes saturated by the time it reaches the bottom, whence it may be drawn off. Convenient for generating the gas in quantity, and as rapidly as desired. Size of jar, 18x4 inches. Capacity of acid bottle, y2 gallon $12.00 See Electrolytic Apparatus. 2966 GAS Generator, Kipp's, complete. Capacity, liters l/2 1 2 Each $8.00 10.00 15.00 2968 2971 2972 2968 GAS Generator, Ernest form. The distinctive features of this generator are compactness and stability, incorporation of a washing device, ease of cleaning and charging, absence of rubber parts, regulation of opera- tion and greater gas storage capacity. Price 2971 GAS Holder, sliding receiver, made of leaded iron, painted, mounted on iron frame, with pulleys and weights, capacity 20 gallons — $50.00 2972 GAS Holder, Berzelius' and Pepy's improved form. Capacity, gallons Of heavy copper, each $30.00 40.00 Of heavy zinc, each 20.00 25.00 2974 GAS Machines for making gas or acetylene gas in quantity for illumination or for heating purposes. Specifications and prices on complete plants on application. LABORATORY SUPPLIES AND CHEMICALS 181 2972(a) 2975 2972a Gas Recorders. Moisture, dust and fume proof. Protable type provided with U-gauge for testing the recorder. For pressure or vacuum. With U-gauge 8-inch $47.00; 10-inch $55.00 Without U-gauge 8-inch: . . .$38.00; 10-inch 44.00; 12-inch 52.00 2973 Gas Regulator, Roux, Bi-metallic, designed to meet the demands for an accurate regulator without the use of mercury or glass in its construction. It is particularly well adapted for Incubators and other Ovens where a constant, even temperature is desired. Inlet tube E is connected by means of rubber tubing to the gas supply; the outlet D is connected in the same manner with the burner under the incubator. A is a set screw to regulate the flow of gas, and B a lock nut; C is a small set screw for pilot light. Diameter of tube, 1 inch. Small size, 10 inches long '. $10.00 Large size, 12 inches long 11.00 2973(a) Gas Regulator, Thermo-Regulator, Roux. Same as above, but made for high temperature. In two sizes: Small, 10 inches long 11.00 Large, 12 inches long 12.00 2973 (b) Gas Regulator, Greenman's, made entirely of steel. The gas entering at "C" must pass the valve "H" before passing to the burner through "D", excepting that a small quan- tity, determined by the screw valve "J" passes through the by-pass "I" to main- tain the pilot flame. The mercury in the tube "A" when expanded raises the valve "H" against the conical valve seat "G" and the valve is prevented from falling too far by the pin at "O." The volume of the mer- cury is controlled by the rod "K," which is held in place by the screw "L." By ad- justing the rod "K" and the screw valve "J" an extremely accurate control of the gas supply and the temperature may be maintained. The slightest increase in the volume of the mercury contained in the tube "A" produces a considerable differ- ence in the height of the mercury in the 2973-3b passage "F" and the float "H," which is about two-thirds submerged in the mer- cury, is carried upward and closes the valve "G." The brass tube into which the regu- lator is to be inserted should be filled with glycerine 12.00 2975 Gas Pressure Regulator, Murrill's latest and most convenient form, for use with a thermostat. A constant temperature can be maintained regard- less of the pressure variations in the gas supply, with two outlets.. . . 10.00 Gas Regulator, see also Thermostats. 182 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 2975(a) 2975 (b) 2975 (c) 2975 (a) Regulating and Reducing Gauge, 3,000-pound gauge on inlet, gauge on outlet, with universal fitting for any oxygen tank $35.00 2975(b) Gas Regulator. For shutting off the supply of gas at any desired time. Consists of specially constructed cock with timing device and gas valve. The gas valve is connected by rubber tubing between the gas supply and the apparatus which it is to regulate 6.00 2975(c) Filter Attachment, for Greenman Regulator; in fact, may also be used with Roux Regulator, to clean gas of coal tar and other solids, thereby assuring perfect working of Regulator 5.00 2978 2980 2982 2976 2976 2978 2980 2982 2984 GAS Tubes, Measuring, Bunsen's. Capacity, c.c 25 Graduated to 1/5 Each $1.25 2986 GAS Tubes, Measuring, with stopcock. Capacity 50 c.c.xl/10 c.c Each $3.00 2984 2986 GAS Tube, Absorption, Babo's, filled with glass beads $3.50 GAS Tube, Absorption, Bunsen's, with bulb, graduated 2.50 GAS Tube, Absorption, Bunsen's, straight, graduated 2.00 GAS Tube, Absorption, Emmerling's, filled with glass beads 3.00 50 100 1/5 1/5 1.75 1.75 c 100 c, 100 200 1/1 1/1 2.25 2.50 c.xl/5 c.c. 3.50 LABORATORY SUPPLIES AND CHEMICALS 183 2988 2990 2998 3000 2988 Gas Washing Tube, Muencke's $1.25 2990 Gas Washing Tube, Scheibler's 1.00 2998 GAUGE, Mercury Manometer, with glass stopcock and movable scale on mirror glass, mounted on support 11.00 3000 GAUGE, Metallic, indicating pressure. Diameter, inches 3 4 5 6 Each $5.00 6.00 8.00 10.00 3002 GAUGE, Metallic, indicating vacuum. Diameter, inches 3 4 5 6 Each $5.00 6.00 8.00 10.00 J " 3006 3010 & 3016 3017 3006 GAUGE for Wire, American standard, Nos. 5 to 36 $3.00 3008 GAUZE, Brass Wire. Meshes to inch 10 20 30 40 60 80 100 200 Per square foot $0.70 .80 .90 1.00 1.20 1.50 2.00 4.00 3010 GAUZE, Brass Wire, correct thickness to use in heating dishes, in square pieces. Size, inches 4 5 6 8 Each .$0.15 .20 .25 .50 3012 GAUZE, Copper Wire, for combustions, etc. • Meshes, per inch 20 40 60 80 100 200 Per square foot ...$1.00 1.25 1.50 2.00 3.00 4.00 3014 GAUZE, Iron Wire. Meshes, per inch 6 10 14 16 20 30 40 60 Per square foot $0.25 .30 .35 .40 .45 .50 .60 .85 3016 GAUZE, Iron Wire, correct thickness to use in heating dishes, etc., in square pieces. Size, inches 4 5 Q g Each $0.06 .08 .10 .20 3017 GAUZE, Asbestos Centre. Made of iron wire, with flat asbestos centre. Size, inches 4x4 5x5 ' 6x6 Each $0.12 .15 .20 3017(a) GAUZE, Nichrome, superior in heat resisting quality to any wire gauze on the market. Size of sheet 20 mesh and No. 27 wire 16 mesh and No. 24 wire 4"x4" 5"x5" 6"x6" Price per sq. ft. $0.60 .90 1.30 5.00 $0.45 .65 .95 3.50 184 A. DA1GGER & COMPANY, CHICAGO, U. S. A. 3022 3023 3020 3022 3023 3024 GLASS-CUTTER, steel wheel, serving purpose of glazier's diamond...... $0.25 *J J-***ww >* *•* * • . .— — -» -.-^ *•* ^-* . £^«J- „;«-«!« VvA«-*n««fA 4-ViA rrln cc tiir\*» 1C GAGE GLASS CUTTERS. Cuts a perfect circle because the glass tube is held in a parallel position in the fibre rests. The glass does not come in contact with metal except at the cutting wheel, and cutting wheel is easily renewed. . 1 aro-e 12 inches, cuts H to mcn §lass UP to 8 inches m length ...... Small ' 8 inches, cuts ft inch up to 5 inches in length. . . .............. GLASS TUBE CUTTER— Griffin's, made of nickel plated brass. Extra steel wheels. Each GLASS Knife, see Knife and also Files. GLASS Plates, see Plates. GLASS Rods, see Rods. GLASS Tubing, see Tubing. GLASS Wool, for filtering acids, etc. Per ounce ................. Per pound 1.50 2.50 1.00 .20 .50 6.00 ^C\ fs~) 3027 3028 3029 3030 3027 GLOVES, Black Rubber. Acid-proof, for protecting the hands in handling acids, nitrate of silver, etc. Size' Short Half long Short Half long Heavy driven No. .'.'.'.' 10 to 12 10 to 12 13 13 13 Gauntlet None 4 in. None 4 in. Sin. Pair $1.25 1.50 1.40 1.65 2.00 3028 GLOVES, White Rubber. For smelters, in use in chlorination and cyanide works, etc. No. 13 with 9-inch gauntlet $3.50 3028 (a) GLOVES, White Rubber. No. 13, 21-inch gauntlet 6.00 3029 GLOVES, Asbestos. With thumb and finger, pair 3.00 3030 GLOVES, Asbestos. Mittens, pair 2.50 3032 GOGGLES for protecting the eyes, white glass, per pair 25 3034 GOGGLES, with colored glass, per pair 25 3036 GOLD Beaters' Skins, each 25 GOLD Washing Pans and Horns, see Pans and Horns. LABORATORY SUPPLIES AND CHEMICALS is: 3040 3042 3038 3040 3042 3044 GRADUATES, Capacity Each . . . GRADUATES, Capacity, Each GRADUATES, Capacity, Each . . . GRADUATES, Capacity, Capacity, Each GRADUATES, Glass, Minim, Conical, accurately graduated. ................................ 1 dram. 2 drams. 1 ounce. .50 16 32 .75 2.00 ................................ $0.25 .30 Glass, Ounces, Conical, accurately graduated. ounces ........... . ........ 1 2 4 8 .......................... $0.25 .30 .35 .45 Glass, Metric, Conical, accurately graduated. c.c ...... 10 15 30 60 100 200 250 500 1000 .......... $0.25 .25 .30 .35 .40 .50 .65 1.10 2.50 Glass, Metric and Ounces, Conical, accurately graduated. c.c ................. 15 30 60 120 250 500 1000 ounces ............. Y2 1 2 4 8 16 32 ..................... $0.40 .40 .45 .60 .80 1.20 2.00 Cylindrical, see Cylinders, Graduated. 3050 3052 3054 3058 3050 HAMMERS, Mineralogical, according to Dana, square face. Weight, ounces 10 20 32 Face, inches 24 1 1/4 Each $1.25 1.50 2.50 3052 HAMMERS, Mineralogical, sharpened at both ends. Weight, ounces 11 24 Each $1.20 1.50 3054 HAMMERS, Plattner's, for blowpipe work $0.75 3056 HAMMERS, Prospecting Picks. Pick length, inches 7 8 Each $1.25 1.40 3058 HAMMERS, Wedge Shaped, for breaking ores, slagging, etc. Weight, ounces 12 15 28 Each $0.60 .65 .75 186 A. DAIGGER & COMPANY, CHICAGO, U. S. A. HARDNESS AND SHEET METAL TESTING MACHINES 3060 3060B 3060 BRINELL Testing Machine. This instrument measures the hardness of materials by the indentation method. A hardened steel ball is pressed into the smooth surface of the metal so as to make an indentation which is read by optical or mechanical means. Price, Style "A" (for 3000 Kg. pressure) Upon Application 3060A Attachment for BRINELL Machine to read the depth of impression. This attachment permits depth readings to 1/100 millimeters, and it was constructed when it was found that the depth of indentation could be more accurately measured than the diameter of indentation. Price Upon Application 3060B BRINELL Microscope. Designed to measure the impressions made in the Brinell Ball Test. It is a compound instrument and permits of great accuracy. Price, with suitable case Upon Application 3062 3062 Pittsburg Metal Sheet Tester. To determine the drawing, stamping, com- pressive and folding qualities of sheets of iron, steel, plated metals and so forth. Price Upon Application LABORATORY SUPPLIES AND CHEMICALS 187 3072 3072 Instantaneous Water Heater, giving instantly a continuous supply of water at any temperature, from boiling to lukewarm, free from the products of combustion, and suitable for all purposes. Designed to hang over lavatory bowl or sink. In two sizes; large size, height 19 inches, projection from wall 8 inches; small size, height 18 inches, projec- tion from wall 6 inches. This water heater is more especially in- tended for the lavatory and the general odd work of laboratory and domestic purposes where hot water is constantly wanted quickly. The gas supply should be from a 5^-inch pipe. It will work equally well, but at a proportionately slower rate, with any gas supply, how- ever small. The speed at which the water runs rules its temperature. It will heat 1 pint of water per minute from 50 to 130 degrees Fahren- heit, or will boil 15 quarts per hour. The duty of the larger size is about double that above given. It is not designed for baths. Con- sumption of gas: large size, 40; small size, 20 feet per hour. Note. — The light must be applied to the gauze before the gas is turned. Recent Improvements. — A pilot light attachment, which auto- matically lights the burner when the gas is turned on; also a coupled gas and water tap, operated by a hand-wheel, a turn of which lights the burner and gives an immediate flow of warm water. 3072b Water Heater, small size, with coupled taps and pilot light $38.00 3072e Water Heater, large size, with coupled taps and pilot light 39.00 For Gasoline Gas, extra 1.00 188 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3073 3073 HEATER, Instantaneous Water Heater, height 9 inches. This gives, when connected with a water tap, hot water in three seconds after the gas is lighted, either boiling, hot, warm or cold, the water being pure and fit for cooking purposes. In one minute it will deliver sufficient hot water for washing hands. It is simple, cheap, not liable to get out of order or wear out. Gas supply required, ^-inch clear bore pipe and tap, to obtain the maximum power, at which it consumes about 60 feet per hour. It will work at a proportionate rate with any gas sup- ply, however small. If frequently used for long periods in a confined room, the products of combustion should be carried away. Water Heater, withut burner \ $ 7.00 With burner, complete, as engraved 9.00 For Gasoline Gas, with wheel valve '. . 10.40 3074 3074 Horn, Gold Washing Horn, 9 inches long, made of polished steel 1.00 3074(a) Horn, Gold Washing Horn, 9 inches long, made of heavy copper 2.50 3075 Horn, Gold Washing Horn, of black, hard rubber, showing the least color of gold 1.50 3075 (a) 3075(d) 3075 (a) Gold Pans, Miners', aluminum. Diameter, inches 6 12 16 Each • $1.00 1.50 2.50 3075(b) Gold Pans, Miners', polished steel. Diameter, inches 6 12 16 Each $0.75 1.50 2.00 3075 (c) Gold Pans, Miners', copper. Diameter, inches 6 12 16 Each $1.00 1.50 2.50 3075(d) Gold Pan, Miners', steel, with copper bottom, 16 inches diameter, 2J^ inches deep $3.50 LABORATORY SUPPLIES AND CHEMICALS 189 3075(e) 3075(g) 3075 (e) Hot Plates or Drying Tables for use with gas. The top is of one piece of steel, with polished surface. The legs and frame are of cast iron. Flame easily regulated. Gives an even temperature. Size of plate, inches ............ 10x18^ 14j4xl8^ 18^x25^ 18^ Number of burners .............. 1 2 3 4 Each ........................... $10.00 12.00 21.00 30.00 3075(f) Hot Plates, same as No. 3075(e), but for use with gasoline gas. Size of plate, inches ............ 10x18^ 14^x18 J4 18^x25^ 18 Each ......................... 11.50 . 14.50 23.00 33.00 3075(g) Hot Plate, Electric, for heat of circular form, mounted on enameled slate, with flexible cord, for alternating or direct current, 110 volts, unless ordered otherwise. 8 inches diameter, with cord ............. $14.00 I 3075(h) 3075 (h) Hot Plate, Electric, Rectangular form, with 3 heats controlled by plug switch. 9x12 inches, with cord and plug switch $22.00 12x18 inches, with cord and plug switch 29.00 18x24 inches, with cord and plug switch 50.00 3075 (j) 3075 (k) 3075(j) Hot Plate, Electric, finished in nickel, with switch giving three heats, consuming 220-440-880 Watts. Heating surface, 10^xlOj4 inches $10.00 3075(k) Hot Plate. Same as No. 3075 (j), with heating surface 10x21 inches. Has two burners, each with separate switch 22.50 3075(m) Hot Plate. Same as No. 3075 (j), with heating surface 14x32^ inches, with three burners and separate switches 32.50 Note. — In ordering Electric Hot Plates, please state VOLTAGE. 190 A. DAIGGER & COMPANY, CHICAGO, U. S. A. HOSKINS HOT-PLATES 3075(n) 3075 (p) Hoskins Electric Hot Plates are guaranteed for one year against burn-out. The heating element is of Chromel wire, the same as used in Hoskins Electric Furnaces. They operate on 110 or 220 volts, alternating and direct current. 3075(n) HOT PLATE— Hoskins' Electric (Type MA No. 101). Circular, 6-in. diameter. Pressed steel tops, heavy bent wire legs; spiral resistance unit; heat distribution uniform. Boils 1 litre of water from cold in 15 minutes. Furnished with 6 ft. twin-conductor flexible cord and detach- able connector plugs. Requires use of 5 ampere snap or knife switch. Draws 500 watts. Maximum temperature, 900° F $ 8.00 Extra heating unit 3.00 3075(p) HOT PLATE, Hoskins' Electric (Type MA No. 111). Square, 12x12 inches. Sheet steep top, cast-iron legs. Centrally heated by spiral resistance unit covering circular area, 5^4 inches diameter. Boils 1* litre of water from cold in 1 hour and 15 minutes. Furnished with 6 ft. twin-conductor flexible cord and detachable connector plugs. Requires 5 ampere snap or knife switch. Draws 500 watts. Maximum temperature in center is 500° F. and 250° F at the edge 12.00 Extra heating unit 3.00 3075(.q) 3075(q) HOT PLATE— Hoskins' Electric (Type MA, Nos. 121, 122, 123). Steel top and legs; "blued steel" and black enamel finish. Renewable resist- ance unit composed of three parallel windings, each controlled by a snap switch on front of plate; heat distribution uniform. "Low" heat, 475° F., obtained with switch "l";"medium" heat, 600° F., with switches '.T'.and "2"; and "high" heat, 750° F., with switches "1," "2," and "3." High heat boils 1 litre of water from cold in 20 minutes. Furnished with 6 ft. twin-conductor, flexible cord and detachable connector plug. Requires use of double pole knife switch of proper capacity. Type No. Size Price MA-121, 12"xl8" x $4,0.00 122, 18"x24" 67.50 *123, 18°x36° 90.00 *Not carried in stock. Extra Heating Unit . 10.00 LABORATORY SUPPLIES AND CHEMICALS 191 HYDROMETERS 3160 BEAUME SCALE FOR HEAVY LIQUIDS 3076 HYDROMETER, Beaume, 0—15° in 1/1° 3078 HYDROMETER, Beaume, 0—50° in 1/1° 3080 HYDROMETER, Beaume, 0—70° in 1/1° 3082 HYDROMETER, Beaume, 0—100° in 1/1° 3084 HYDROMETER, Beaume, 0—30° in 1/5° . . . '. 3086 HYDROMETER, Beaume, 30—50° in 1/5° I Each 3088 HYDROMETER, Beaume, 50—75° in 1/5° I $1.25 3090 HYDROMETER, Beaume, 0—10° in 1/10° 3092 HYDROMETER, Beaume, 10—20° in 1/10° 3094 HYDROMETER, Beaume, 20—30° in 1/10° 3096 HYDROMETER, Beaume, 30—40° in 1/10° 3098 HYDROMETER, Beaume, 40^-50° in 1/10° BAUME SCALE FOR LIGHT LIQUIDS 3100 HYDROMETER, Beaume, 10—70° in 1/10° 3102 HYDROMETER, Beaume, 10—90° in 1/1° 3104 HYDROMETER, Beaume, 10—50° in 1/5° 3106 HYDROMETER, Beaume, 10—35° in 1/10° 3108 HYDROMETER, Beaume, 35—70° in 1/10° BEAUME AND SPECIFIC GRAVITY SCALES 3110 HYDROMETER, Beaume, 10—70°, Specific Gravity, 1.000—0.7000 $1.25 3112 HYDROMETER, Same, with Thermometer 3.00 3114 HYDROMETER, Beaume, 0—70°, Specific Gravity, 1.000—2.000. 1.25 3116 HYDROMETER, Same with Thermometer 3.00 BRIX'S SCALE HYDROMETERS, "Standard" Brix Scale. 3118 HYDROMETER, 0—30; 30—60; 60—90° in */* 3120 HYDROMETER, 0—30; 30—60; 60—90° in 1/5 3122 HYDROMETER, 0—10; 10—20; 20—30° in 1/10, etc I Each 3124. HYDROMETER, 0—20; 20—40; 40—60° in 1/10, etc [ $1.25 3126 HYDROMETER, 0— 5; 5— 10; 10— 15° in 1/20, etc 3128 HYDROMETER, For Osmose, graduated at 80° C 3130 HYDROMETER, For sweet water —5 to + 5° in 1/5 3132 HYDROMETER, "Standard" Brix Scale, wtih thermometer. 0—20; 20—40; 40—60; 60—80° 1/10 3.00 SPECIFIC GRAVITY SCALE 3134 HYDROMETER, Specific Gravity, 0.700 to 1.000 3136 HYDROMETER, Specific Gravity, 0.700 to 2.000, "Universal" 3138 HYDROMETER, Specific Gravity, 0.700 to 0.800 3140 HYDROMETER, Specific Gravity, 0.800 to 0.900 3142 HYDROMETER, Specific Gravity, 0.900 to 1.000 192 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3144 HYDROMETER, Specific Gravity, 1.000 to 2.000 . . . 3146 HYDROMETER, Specific Gravity, 1.000 to 1.500. . . 3148 HYDROMETER, Specific Gravity, 1.500 to 2.000. 3150 HYDROMETER, Specific Gravity, 1.000 to 1.200. 3152 HYDROMETER, Specific Gravity, 1.200 to 1.400. 3154 HYDROMETER, Specific Gravity, 1.400 to 1.600. 3156 HYDROMETER, Specific Gravity, 1.600 to 1.800. 3158 HYDROMETER, Specific Gravity 1.800 to 2.000. Each " $1.25 Any of the above specific gravity hydrometers can be sup- piled to order, with thermometers. Any of the above hydrometers can be supplied with the corresponding Beaume scale for $0.50 extra. TWADDLE'S SCALE 3160 HYDROMETER, Twaddle's, No. 1, 0 to 24° ... . 3162 HYDROMETER, Twaddle's, No. 2, 24 to 48°. .. 3164 HYDROMETER, Twaddle's, No. 3, 48 to 72°. 3166 HYDROMETER, Twaddle's, No. 4, 72 to 96° .... 3168 HYDROMETER, Twaddle's, No. 5, 96 to 120°. 3170 HYDROMETER, Twaddle's, No. 6, 120 to 144°. Each $1.25 MISCELLANEOUS HYDROMETERS 3172 HYDROMETER, Acid, 0 to 70° Beaume 1 3174 HYDROMETER, Acid, 0 to 100° Beaume.. . !• ?.aj;j} I <pl.<69 3176 HYDROMETER, Alcohol, with ;>roof and Tralle's scales 1 3178 HYDROMETER, Alcohol, with proof and Tralle's scales and thermometer. $3.00 3180 HYDROMETER, Alkali, 0 to 50° Beaume 1.25 3182 HYDROMETER, Ammonia, 10 to 50° Beaume in 1/5° 1.25 3184 HYDROMETER, Bark, 1.000 to 1.070, specific gravity 3.00 3186 HYDROMETER, Bark, 1.000 to 1.070, with thermometer 3.00 3188 HYDROMETER, Battery, Beaume scale 1.25 3190 HYDROMETER, Battery, flat bulb, short, for storage batteries 1.50 ffi AMCO 3192 3192 HYDROMETER, Battery. Combined syringe and hydrometer. The most convenient appliance for testing and equalizing the solution in storage batteries 3.00 3194 HYDROMETER, Beer, Balling's standard .- 5.00 3196 HYDROMETER, Coal Oil, 10 to 90° Beaume 1.25 3198 HYDROMETER, Coal Oil, with thermometer 10 to 90° Beaume 3.50 3199 HYDROMETER, Coal Oil, Standard, adopted by U. S. Petrol Assn., with thermometer 3.50 3200 HYDROMETER, Gasoline, 10 to 90° Beaume 1.50 3202 HYDROMETER, Gasoline, Patented Pocket Gasoline Gauge, consisting of a Beaume hydrometer held m a glass cylinder by means of a wire guard frame, which prevents the hydrometer from falling out and from striking the bottom of the cylinder, net 3204 HYDROMETER, Glycerine, 20 to 30° Beaume in 1/10° 3206 HYDROMETER, Lye, 0 to 50° Beaume NOTE PLEASE TAKE NOTICE THAT THE PRICES LISTED IN THIS CAT- ALOG ARE THE LATEST ONES ON ALL ITEMS LISTED UP TO THE TIME OF GOING TO PRESS. WE MENTION THIS FACT FOR THOSE WHO COMPARE OUR PRICES WITH THOSE OF OTHER SUPPLY HOUSES, WHOSE CATALOGS ARE NOT OF RECENT DATE TO IN- CLUDE SUCH ADVANCES ON ALL ITEMS AS HAVE BEEN MADE DURING THE PAST YEAR. ANY IMPORTANT CHANGES IN PRICE WILL BE LISTED FROM TIME TO TIME IN OUR SUPPLE- MENTARY PRICE LISTS. CELERITAS BRAND LABORATORY SUPPLIES AND CHEMICALS 193 3208 HYDROMETER, Milk, giving percentage of water added ................ $1.25 3212 HYDROMETER, Milk, N. Y. Board of Health, with thermometer ...... 3.00 3214 HYDROMETER, Milk, Quevenne's ............... ....................... 1.50 3216 HYDROMETER, Milk, Quevenne's, with thermometer .................... 3.50 3218 HYDROMETER, Naptha, 40 to 100° Beaume ....................... 3220 HYDROMETER, Salt, 0 to 50° Beaume ............................. 3222 HYDROMETER, Silver, or "Actinometer" ...................... ' . . HYDROMETER, Spirits, see Hydrometers for Alcohol. 3224. HYDROMETER, Sugar or Syrup, 0 to 50° Beaume HYDROMETER, Sugar, see also Hydrometers, Brix's Scale. HYDROMETER, Urine, see Urine Analysis Apparatus. 3226 HYDROMETER, Vinegar .......................................... HYDROMETERS, see also under Oil Testing Apparatus. Note: — There are a great many styles of Hydrometers, not listed herein, but which we are prepared to make. Prices upon application. LEach J 3228 3233 3228 Hydroeik, an improved form of the Mason's Hygrometer. Consists of two thermometers (wet and dry bulb) mounted upon the outer edge of a chart, which has been plotted from new and corrected tables pre- pared under the direction of the United States Weather Bureau. 3232 The Mason Hygrometer, while invariably recognized as the most accurate and satisfactory of the many forms of hygrometers in use, has never enjoyed the popularity which its merits deserve, owing to the annoy- ing necessity of reference to complicated tables for determining the Relative Humidity and Dew Point corresponding to the difference in degrees between the wet and dry bulb thermometers at different tem- peratures. The Hygrodeik chart, while complicated in appearance, is simplicity itself, and obviates entirely the use of tables for temperatures between 20° and 200° F. Full instructions with each. $10.00 3233 HYGROMETER, Mason's; with wet and dry bulbs. Lines drawn on the scale for convenience of maintaining a humidity of 50° at normal tem- peratures of the living room; size, 8j4x4^ in 5-00 HYGROMETER, U. S. Weather Bureau, consisting of two standard ther- mometers, extending below the finely polished hardwood back, metal cistern with wick and certificate for each thermometer 12.00 194 A. DAIGGER & COMPANY, CHICAGO, U. S. A. JARS 3278 3279 3278 JARS, Battery, glass, round. Width, inch 4 ±l/2 4^ 5 5 G 5 8% 9 Height, inches 4 4^ 5 6 7 8 11 12 15 Each $0.45 .55 .60 .75 .90 1.10 1.80 2.CO 3.25 3279 JARS, Battery, square, ground top. Inches 3^x3^x5 4x4x4 2^x4^x6 2^x4 %x7 4x4x8 Price $0.50 .50 .75 .85 1.00 3280 3283 3288 3292 3289 JARS, Chloride Calcium, on foot, with tubulature near bottom. Height, mm 200 250 300 400 Each $1.00 1.25 1.50 2.50 3282 JARS, Chloride Calcium, with perforated glass stopper. Height, mm 200 250 300 350 400 Each $1.60 1.75 1.85 2.00 2.25 JARS, Nessler's, see Nos. 2341J, 2341 K. 3288 JARS, Percolator, graduated in ounces. Capacity, in quarts . . . . 1 2 4 8 Each $2.00 2.50 3.50 5.00 3290 JARS, Percolator, graduated in c.c. Capacity, in liters 1 2 4 8 Mark every c.c 100 100 200 500 Each $2.50 2.50 3.50 5.00 3292 JARS, Precipitating, of heavy glass, with lip. Capacity, pints % Y* 1 2 41 gal. 2 gal. 3 gal. Each $0.50 .60 .75 1.00 1.50 1.80 3.50 5.00 JARS, Preparation, see Stender Dishes. LABORATORY SUPPLIES AND CHEMICALS 195 3293 3295 3297 3293 JARS, Lightning, of greenish glass, with glass cover and rubber ring fastened by steel wire clamp. Capacity 1 Ft. 1 Qt. Total height, inches 5 ll/2 Inside diameter of neck, inches 2^4 Per dozen " $1.75 2.25 S295 JARS, Preservation, for storing chemicals, etc.-, with glass cover and screw top. Capacity Pt. Qt. y2 gal. Per dozen $1.75 2.25 2.75 3297 JARS, Inverted, specimen. Height, inches 3% Diameter, inches 1^4 Capacity, pints % Each .." $0.12 y& G 2 2^ tf T' 9 11 3^ 4J4 2 4 14 .16 .18 .24 .36 .60 1.20 Per dozen 1.20 1.60 2.00 2.50 3.60 6.00 12.00 3298 3298 JARS, Stone or Earthenware. Capacity, gallons 1 Each $0.50 3299 3 5 6 8 10 .75 1.00 1.50 2.00 2.50 3.50 3299 JARS, Stoneware, with handles and cover, "Waste Jars." Capacity % y2 i 3 3 4 5 gai. Each $0.30 .50 .60 .90 1.20 1.50 1.80 3302 3304 3302 KNIVES, Amalgam, with handle, blade 3 in. wide, for cleaning amalgam plates $1.00 Knives for cutting cork, see Cork Knife. 8304 Knives for cutting glass, of hard steel 1.25 196 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 201 3308 3306 LABEL BOOKS, including the names of the most used chemicals and reagents strip form, gummed and perforated, with name and formula.. $0.50 3808 LABELS, gummed paper, of any size. No 223 217 213 261 205 '201 219 209 259 241 239 229 Box ....$0.08 .09 .10 .10 .11 .12 .10 .10 .09 .08 .09 .11 3309 LABELS. No 2004 2007 2002 2001 2006 2005 2003 Size, in 2^x1 2^x1^ 3^x1 3^x1^ 3x154 4x1% 4^x2 Box $0.20 .25 .25 .30 .35 .40 .50 , 3312 3312 LADLES, Melting, wrought iron, with lip. Dia., in Each 3314 2J^ 3 4 5 6 $0.25 .30 .35 .45 .50 3314 LADLES, cast iron, with detachable handle. Size, in Each . .' 4x2J4 4^x2^4 4x2^ $0.65 .60 .50 3316 3317 3316 LAMPS, Alcohol, glass. With ground-on cap, wick and wick holder. Capacity, ounces 2 4 Each $0.25 .30 3317 LAMPS, Alcohol, with ground cap, with wick and wick holder included. Capacity, ounces 1 2 4 Each ,$0.30 .40 .50 8 .40 80 .75 LABORATORY SUPPLIES AND CHEMICALS 197 3322a 3322b 3322c 3322d 3322a LAMPS, Alcohol, polished brass, with screw top, in three sizes. Capacity, ounces 2 4 8 Price $0.75 1.00 1.25 3322b LAMPS, Alcohol, polished brass, with screw top, ratchet burner, in two sizes Capacity, ounces 3 5 Price $1.25 1.75 3322c LAMPS, Alcohol, polished brass, nickel-plated, with screw top, ratchet burner, in two sizes. Capacity, ounces 3 5 Price $1.00 1.50 3322d LAMP, Alcohol, polished brass, nickel-plated, with screw top, small flame. Capacity, 2 ounces. Price $0.75 3322e LAMP, Alcohol, polished brass, nickel-plated, wick-holder lifts out, large flame. Capacity, 2 ounces. Price 1.00 3324 LAMP WICKS, per bundle. . .10 3326-28 3330 3326 LAMPS, Dangler's, for Gasoline, giving high or low flame $ 9.00 3328 LAMPS, Dangler's, with Copper reservoir 11.50 3330 LAMPS, Davy Safety or Miners' 7.50 LAMPS. See also under Burners. We carry a full line of e. p. chemicals. Prompt deliveries our specialty. 198 A. DAIGGER & COMPANY, CHICAGO, U. S. A. LECTURE APPARATUS 3334 3336 3334 LECTURE Apparatus for the electrolytical decomposition of hydrochloric acid, water and ammonia. 3334a The V shaped tube with stout platinum electrodes $5.00 3334b The support 4.00 3336 LECTURE Apparatus to show that hydrochloric acid is produced by the combination of 1 vol. of Chlorine with 1 vol. Hydrogen, the apparatus consisting of tube, 2 tube supports, chloride of calcium jar, cylinder with widened mouth and decomposing cell. 3336a The tube only 5.50 3336b The tube supports only 4.50 3336c The decomposing cell only 6.75 3338 3342 3338 LECTURE Apparatus to ascertain the quantity of hydrogen contained in 1 vol. of hydrochloric acid. 3338a The tube, with 2 hollow glass stopcocks 5.00 3338b The support 5.00 LABORATORY SUPPLIES AND CHEMICALS 199 3340 LECTURE Apparatus to show the combination of 3 vols. of hydrogen with I vol. of nitrogen into 2 vols. of ammonia. 3340a The tube, with 2 glass stopcocks $ 7.50 3340b The support 4.50 3342 LECTURE Apparatus to prove that water consists of 2 vols. of hydrogen and 1 vol. of oxygen. 3342a The tube, with platinum electrodes 7.50 3342b The tube, with graduated arms . 10.00 3342c The support, with binding screws for the poles 4 50 3344 3346 3348 3344 LECTURE Apparatus for the simultaneous electrolytical decomposition oi Water, Hydrochloric Acid and Ammonia; to show that 1 vol. of Hydrogen is combined with 1 vol. of Chlorine in Hydrochloric Acid, with Yz vol. Oxygen in Water and with YT, vol. of Nitrogen in Am- monia. 3344a The tube with platinum electrodes $ 9.00 3344b Tubes with carbon electrodes, each 9.00 3344c Supports with binding screws for the poles, each 9.00 3346 LECTURE Apparatus to show that Hydrogen and Oxygen are combined in the same proportions as they are liberated from Water by elec- trolysis. 3346a Tubes with 2 glass stopcocks, each 7.50 3346b The middle tube with glass stopcock, each 4.50 334Gc The supports, each 4.50 3348 LECTURE Apparatus to prove the invariable composition of Hydrochloric Acid. 3348a The tube * 4.50 3348b The support with collar and holder 4.00 3350 LECTURE Apparatus to show that 2 vols. of Hydrogen are contained in 1 vol. of Marsh Gas. • 3350a The tube • 7.50 3350b The support 4.50 3352 LECTURE Apparatus to show that Ammonia contains 3 vols. of Hydrogen and 1 vol. of Nitrogen. 3352a The tube, with stopcock, rubber stopper and connecting tubing 7.00 3352b The cylinder, 36 inches high, with leaded base 8.50 3354 LECTURE Apparatus to prove that there is no alteration of volume by the combination of Hydrogen and Chlorine to Hydrochloric Acid, and that consequently 1 vol. of Hydrogen and 1 vol. of Chlorine produce 2 vols. of Hydrochloric Acid. 3354a The tube 5.25 3354b The support of iron 4.00 3354c Small glass bulbs for sealing up carbon disulfid. Dozen 1.25 200 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3352 3354 3356 3356 LECTURE, Prof. Hoffman's Lecture Eudiometer. 3356a The eudiometer, graduated in ce $ 9.00 3356b The support, with double clamps 6.00 (Ber. d. Deutsch, Chem. Ges. Vol. 10, p. 250.) 3358 3360 3362 3358 LECTURE Apparatus to show that oxygen has the same volume as the carbonic acid and the sulfurous acid produced from it. 3358a The tube $ 9.00 3358c The support 4.50 3360 LECTURE Apparatus for illustrating the phenomena of combustion. 3360a The tube complete, with platinum burner, 2 glass stopcocks, etc 7.60 3360b The support • 4.00 33612 LECTURE Apparatus for experiments with liquid sulfur dioxide. The appa- ratus, including cylinder 7.50 LABORATORY SUPPLIES AND CHEMICALS 201 3368 3374 LETTERS, see Dies. 3364 LEVELING Screws, brass, for balances, etc. For, gramme balance 50 100 200 500 1000 Set $1.20 1.40 1.60 2.00 2.30 3368 LEVELS, Spirit, mounted in brass frames. Length, inches , 4 5 6 Each $0.75 1.00 1.25 3372 MAGNET, Bar, best quality. Length, inches ... 5 6 8 10 Pair , $0.30 .35 .40 .50 3374 MAGNET, Horseshoe, best English steel. Length, inches 2 3 4.5 6 8 10 12 Each $0.10 .15 .25 .40 .50 1.10 1.80 2.50 A B C 3375 3375 MAGNIFIERS, Doublet. These doublet magnifiers are composed of two sepa- rate piano convex lenses, very carefully and accurately ground and polished, and substantially set in a rich black lacquered mount. Types B and C are nickeled. They give excellent definition and an exceptionally flat field with greater working distance than is usually found in this type of lens. Three different styles of mounting are offered, according to the different purposes for which they are to be used. A — for dissecting stand. B — for desk use, with hexagonal handle. C — in folding pocket case. Focal I )istance Magnification Milli- meters Inches Approx. Working mm. Field mm. Mount. Price A 6x 41.G 1.6 22 22 in $1.00 B 9x 27.8 1,1 15 16 1.00 C 12x 20.8 0.8 12 11 fS'o 1 1.00 D ... 18x 13.9 0.5 8 8 ls§ 1.25 E : 24x 10.4 0.4 6 5.5 1.50 F .... . 6x 41.6 1.6 22 22 1.00 G 9x 27.8 1.1 15 16 C ,, 1.00 H 12x 20.8 0.8 12 11 oJS 1.00 J 18x 13.9 0.5 8 8 W g e 1.25 K 24x 10.4 0.4 6 5.5 B^ 1.50 L 6x 41 6 1 6 22 22 1 25 M 9x 27.8 1.1 1§ 16 1.25 TSJ 12x 20.8 0.8 12 11 UT?" 1.25 O ISx 13.9 0.5 8 8 "3(3 1.50 P 24x 10.4 0.4 6 5.5 1.50 A. DAIGGER & COMPANY, CHICAGO, U. S. A. NICKELED MOUNTING 3378 These magnifying glasses are made in one, two, or three lenses, which may be used singly or in combinations for different magnifications. 1-Lens 2-Lens 3-Lens 3376 Magnifying Glasses. Vulcanite Mounting, 1 inch diam- eter $0.50 .75 1.00 3378 Magnifying Glasses. Nickeled Metal Mounting, 1 inch di- ameter $0.55 .80 1.20 3380 3382 3384 These are genuine Coddington Magnifiers, very powerful, in nickel-plated folding cases. 3380 Magnifying Glasses, Coddington. Diameter, in mms 20 25 30 35 price $1.50 1.75 2.00 3.00 3382 Magnifying Thread Counters, in brass case. Diameter open square, inch 1 Y^/2 V± prjce ...$1.50 .40 .40 3384 MAGNIFIER, Tripod Dissecting. This dissecting magnifier gives a large, clear field and magnification suf- ficient for elementary work. The lens is focused by screwing it up or down in its frame. Price, each • $1.50 3386 3386 MAGNIFIERS, Reading Glasses, metal frame, polished wooden handles. Diameter of lenses, inches 2 Zl/2 3 zy2 4 Each $0.80 1.00 1.50 2.00 2.50 LABORATORY SUPPLIES AND CHEMICALS 203 3387 3387 MAGNIFIERS, Triple Aplanat. These lenses are remarkable for their great working distance and their unusually large, flat field. They are perfectly achromatic and free from distortion. Focal ] Distance Working Diam. Pool Magnification Milli- meters Inches Apprgx. Distance mm. Field mm. Mount. Price \ . . . 6x 41 6 1 6 36 8 20 M $3 50 B 9x 27.8 ' 1 1 24 5 20 S-So 3.50 C 12x 20.8 0.8 18.4 15 £«§ 3.50 D ..18x 13.9 0.5 12.1 10 ill 3.50 E 24x 10.4 0.4 9.2 7.5 31 3.50 F 6x 41.6 1.6 36.8 30 3.50 G 9x 27.8 1.1 24.5 20 §js 3.50 H . . . . . .12x 20.8 0:8 18.4 15 bo-o ca rt c 3.50 J ; . . .I8x 13.9 0.5 12.1 10 BJ5 .WM 3.50 K 24x 10.4 0.4 9.2 7.5 W^ 3.50 L fix 41.6 1.6 36.8 30 3.50 M 9x 27.8 1.1 24.5 20 3.50 N ... ... .12x 20.8 0.8 18.4 15 .*•« 3.50 O ISx 13.9 0.5 12.1 10 us % r°U 3.50 P 24x 10.4 0.4 9.2 7.5 fa 3.50 3388 3390 3388 MALLETS, hardwood $0.50 3390 MALLETS, Rawhide end 1.75 MANOMETERS, see Gauges. MEASURES 3392 3396 3392 MEASURES, Calipers, in and outside 4-inch $0.50 3394 MEASURES, Caliper, Micrometer, measures all sizes, less than ^-inch by thousandth of an inch 7,59 3396 MEASURES, Caliper, Micrometer, graduated to read to hundredths of a millimeter 7 50 204 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3398 3398 MEASURES, Caliper, improved Pocket Venier; metric and English mea- sure. Graduated on one side to read thousandths of an inch, the other side graduated to read a fiftieth millimeter $10.00 3400 3402 3408 3400 MEASURES, Boxwood, with four folds, 2 feet; inches on one side, milli- meters on the other side , . $ 0.60 3402 MEASURES, Folding, 1 foot, divided into inches on one side, centimeters and millimeters on the other, with caliper extension 75 3404 MEASURES, Brass, with caliper, graduated into millimeters 1.50 3412 3414 3406 MEASURES, Meter Stick, on one side graduated to Mj-inch, on the other to millimeters $ 0.50 3408 MEASURES, Tape, steel, in inches and centimeters; in German silver case. Length, feet 3 6 12 Each $1.50 2.25 3.50 3410 MEASURES, For Liquids, tin. Capacity • l/2 pt. 1 pt. 1 qt. y2 gal. 1 gal. Each $0.20 .25 .30 .40 .50 3412 MEASURES, Agate Ware, seamless. Capacity ^ pt. 1 pt. 1 qt. ^ gal. 1 gal. Each $0.50 .65 .85 1.00 1.50 3414 MEASURES, Copper. Capacity Y* pt. 1 pt. 1 qt. ^ gal. 1 gal. Each $0.75 1.00 1.25 1.75 2.50 LABORATORY SUPPLIES AND CHEMICALS 205 MILK ANALYSIS APPARATUS 3422 3424 3422 THE "OFFICIAL" BABCOCK TESTER, a small, perfectly .accurate, easy running, low priced hand tester. Has enclosed cut gears. Runs without noise, jar or friction. Fitted with thumb screw and clamp, so it can be clamped to table or screwed down. Prices No. 1-2 bottle, complete for testing milk, each $5.00 No. 2-4 bottle, complete for testing milk, each 6.00 No. 3-2 bottle, complete for testing milk and cream 5.75 No. 4-4 bottle, complete for testing milk and cream 6.75 Prices include full directions for making test, acid measure, piquette, test bottles, test bottle brushes and acid. 3424 THE TWENTIETH CENTURY BABCOCK HAND TESTER. The hinged case iron cover opens downward on a spring. It cannot break. The Twenti- eth Century Babcock Hand Tester is operated with spur and worm gear, which gives the high speed necessary for a perfect test. It fills completely the demand for a high speed, accurate, durable, easily operated hand power tester. The perfect enclosure of the bottles does away 'with danger from flying acid and glass, should one of the bottles break. Prices 4 bottles • . .$10.00 6 bottles 11.25 8 bottles 13.80 30 bottles 14.50 12 bottles 17.50 BABCOCK CENTRIFUGE, International Make, see under Centrifuge. 206 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 7426 3430 3446 3450 3448 3451 3456 Each Dozen $2.00 2.00 3428 MILK TESTING BOTTLES, 10%, regular in 1/5% $0.30 3428 MILK TESTING BpTTLES, With etched tops 30 (If each bottle is packed separately in pasteboard box, 75 cents per gross additional.) 3430 CREAM TEST BOTTLES, 30% in y*% 40 4.00 3432 CREAM TEST BOTTLES, 40% or 50%, straight neck, in 1% 50 5.00 3446 TEST BOTTLES, For skim milk, with double bore. Graduated in 1/20%. Each 75 3448 GRADUATES FOR ACID, 17.5 cc 25 3.00 3450 ACID BURETTES, with stopcock holding. Charges of acid of 17.5 cc. each 3 6 12 25 Price $2.50 3.00 4.00 6.00 3451 FUNNELS, For test bottles, each, net 20 3456 MILK PIPETTES, 17.6 cc., 20c; doz , 2.00 3458 MILK and Cream Pipettes, 17.8 and 18 cc., 25c each; doz 2.25 LABORATORY SUPPLIES AND CHEMICALS 207 3459 3460 3462 3463 3459 3460 3462 9463 ACID BOTTLE, With 17.5 cc. Pipette, and stopcock. A very simple and practical acid measure. Each CREAMOMETER JARS, Graduated 0-90— 1^" dia. 10" long. ....... '"75 CREAMOMETER JARS, Graduated 0-30—2 " dia. 12" long. 75 CASEIN TUBES, Hart's ' j'^ IB* 3470 3474 3467 ROEHRIG TUBE, for the determination of fat in milk, cream, ice cream, skim milk, buttermilk, cheese, etc., by the Roese-Gottlieb method. .. .$2.00 3467 (a) ROEHRIG TUBE, As above, with perforated gl,ass stopper 3.00 3468 LACTOBUTYROMETER, Marchand's .' 75 3470 LACTOSCOPE, Feser's on metal base. Complete, with directions in box.. 4.00 LACTOMETERS, see Hydrometers. 3474 ALUMINUM DISHES, For Milk Analysis. Diameter, inches 2 2l/2 3 Zl/2 4 Height, inches l/2 s/% ~y£ 7A 1 Each $0.20 .30 .35 .45 .50 208 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3475(a) 3475(c) 3475(b) 3476 3475(a) Single Specimen Mill, 9x1 inch pulley; R. P. M., 80-120; floor space, 9x11 inches; jar measures, 5.2x5.71 inches; l/\ oz. to l1/^ Ib. capacity Price . $18.00 3475(b) Double Specimen Mill, 9x1 inch pulley; R. P. M., 80-120; floor space, 9x18 inches; jar measures. 5.2x5.71 inches; ,:4 °z- to I1/- Ib. capacity. Prices 28.0P 3475(c) MILL, Ball. The jar measures, outside, 8.75x9.65 inches, will handle from a few ounces up to 5 pounds at a charge; shipping weight, 120 pounds; floor space, 10J/2X25 inches. Hand wheel-pulley, 9x1 inches, 60 R. P. M. Price . 44.00 3676 MILLS, Laboratory, for grinding roots, herbs, seeds, etc. No 2 3 5 7 Height, inches 12^ 15 17 2\l/2 Weight, Ibs 15 22*/2 36 62 Each $5.50 8.25 12.00 16.50 LABORATORY SUPPLIES AND CHEMICALS 209 3477 3477(a) 3477 MILLING MACHINE, Johnson's, for taking samples of irregular shaped steels, etc ; $35.00 3477(a) MILLS, with pulley for power, grinding cereals, cocoa beans, vanilla beans, white lead massage creams and for reducing other materials to pasty consistency. The feeding cylinder is octagonal and permits the feed shaft to grasp the material in the most effective way; all parts are heavily tinned. Height, 24 inches; length, 12 inches. Pulley, 12x^4 inches. Requires 2 to 3 H. P. motor for 300 R. P. M 60.00 3477 (b) MOISTURE APPARATUS, Brown- Duvel's, adopted by the Bureau of Plant Industry, U. S. Department of Agricul- ture. These testers were developed pri- marily to meet the needs of grain dealers for a rapid and exact method of deter- mining the moisture in corn. They are made in sizes for one, two, four or six complete tests at one time, and are equipped with either alcohol, gas or electric heat. Compactness is a big feature of this machine. Two compartment, alcohol or gas burners $40.00 Four compartment, alcohol or gas burners 55.00 Six compartment, alcohol or gas burners • 70.00 Electrically heated at $8.00 per com- partment, in addition to the above prices. 3477(b) (Specify 110 or 220 volts.) These prices include one gallon Testing Oil, one gallon Alcohol, Automatic Oil Measuring and Grain Separating Devices, all necessary accessories, but do not include scale. An accurate scale for weighing in grams is essential. Specify either Special "Four-in-One" Scale or Harvard Trip Balance. (See Laboratory Scales.) Condensing tank on two-burner size machine will not be equipped for running water unless specified. Prices subject to change without notice. SEPARATE PARTS Distillation flasks of glass . .$1.00 Thermometers 2.00 Graduated cylinders, cap. 25 c.c 75 Condensing tubes 25 Graduates for measuring oil, 150 c.c 75 Wire gauzes 15 Special rubber stoppers for distillation flasks. . 15 210 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3478 3482 3484 3478 MORTARS, Agate, with pestles; best quality. Dia. mm 40 50 65 75 90 Each Prices upon application Dia. mm 100 115 125 140 150 Each • Prices upon application 3489 MORTARS, Agate and pestles, mounted in wood... Prices upon application 3482 MORTARS, Diamond, Planner's. Small. Large. Each $5.00 7.50 3484 MORTARS, Steel, Diamond, Leed's 3.00 3488 MORTARS, Glass, with lip and pestle. Capacity, oz 1 2 4 8 16 32 Each $0.20 .30 .40 .50 .80 1.00 3490 3494 3492 3490 MORTARS, Porcelain, with Pestles, with lip, Pestles all porcelain; medium deep form. Size No. 0 Capacity, about c.c 75 Height, about m.m 45 Diameter, about m.m 70 Each $0.35 rough inside, glazed outside. 1 2 3 4 5 6 185 375 360 450 680 1070 1500 59 85 80 85 95 108 11? 100 126 140 160 177 210 240 .55 .85 1.05 1.20 1.35 1.60 2.20 3491 PESTLES, Porcelain. Glazed, excepting end used for grinding. Size No 1 2 3 4 5 Length, m.m 98 118 180 190 205 Each $0.15 .25 .30 .40 .60 3492 MORTARS, Porcelain, deep for, with lip, glazed outside with porcelain pestle. Size number 0; dia. 95 m.m; height 64 m.m; capacity 200 c.c.; length of pestle 113 mm. Each. $0.75 3494 MORTARS, Wedgewood, pestle with wooden handle. No 0000 000 00 0 Dia., inches 3 3^4 3^ 4 Each $0.70 .80 .90 1.00 No 5 6 7 8 Dia., inches 7 8 81/. 9*/2 Each $2.50 3.25 3.75 4.50 6.00 1.10 9 1.30 10 12 7.50 3 6 1.80 11 13 2.00 12 14 8.00 10.00 LABORATORY SUPPLIES AND CHEMICALS 211 3498 3499 3499(a) 3498 MORTARS, Iron, bell shape, with pestle. Approx. capacity Y? Diameter, inches 4 Each . $0.50 1 2 4pt. 1 23 gal. 5 5l/2 6l/2 9 11 14 .85 1.20 1.75 2.50 5.00 8.00 3499 MORTARS, Iron, No. 1, high style. Best quality for powdering ore. Capacity 1 pt. 1 qt. % 1 2 3 gal. Each ! $0.60 .90 1.25 2.25 4.00 6.00 3499(a) MORTARS, Steel. Polished inside and out; with pestle. Diameter, c.m 9 12 15 Each . ..... $2.50 3.00 4.50 3500 3501 3500 MORTARS, Buck's improved, of iron, especially adapted for grinding and amal- gamating. Through the manner in which the muller is constructed, the contents of the mortar again pass under the muller. Diameter, inches &l/2 8l/2 Weight, pounds 30 76 Weight Muller, pounds 16 49 Price, each $7.50 10.00 3501 MOTOR, for water, steam or compressed air. This motor can be attached to an ordinary apparatus stand and used for either stirring or shaking. Size, 5 inches diameter. Revolutions attained according to water pressure, as follows: 20 30 2300 2800 Price , 40 50 60 pounds water press. 3400 3850 4200 revolutions per min. .$7.50 212 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 503 3503(a) 3503 MOTOR, Series Intermittent Service, alternating and direct current. Machines or devices that have a fixed load can be successfully driven by series type motors, but where the load varies and it is necessary to maintain a con- stant speed at all times, regardless of the load fluctuation, this type of motor will not answer the requirements fully. For uses such as driving small fans, air pumps, centrifuges, etc., these little motors will be found preferable. Data Frame H.P. Volts Cycles Weight Price C-l C-l C-2 C-2 C-3 C-3 1/80 1/80 1/50 1/50 1/30 1/30 110 110 110 110 110 110 D. G. 60 D. C. 60 B.C. 60 34 oz. 34 oz. 45 oz. 45 oz. 55 oz. 55 oz. $11.30 11.30 12.35 12.35 13.50 13.50 3503(a) MOTORS, Electric. These motors are for direct current, and are guaranteed by us to be thoroughly first-class for laboratory use. They are of the bi-polar construction, having an external appearance somewhat similar to the alternating current type. The two end shields are made separate from the field frame, allowing free acQess to the internal parts. Pulleys — Single groove for round belt, 2-inch pitch diameter, furnished with Nos. 28 and 26 frames; 2^-inch pitch diameter furnished with No. 26s frame. Data Frame H.P. Volts Load Speed Winding Net Wgt. Price 28 1/10 110 1125 Shunt 21 $27.00 28 1/10 220 1152 Shunt 21 29.00 26 1/8 110 1125 Shunt 24 31.00 26 1/8 220 1125 Shunt 24 33.50 28 1/8 32 1725 Shunt 21 29.00 28 1/8 110 1725 Shunt 21 27.00 28 1/8 220 1725 Shunt 21 29.00 26 1/6 32 1725 Comp. 24 33.50 26 1/6 110 1725 Shunt 24 31.00 26 1/6 220 1725 Shunt 24 33.50 26s 1/4 32 1725 Comp. 26 39.50 26s 1/4 110 1725 Comp. 26 37.00 26s 1/4 220 1725 Comp. 26 39.50 LABORATORY SUPPLIES AND CHEMICALS 213 3503(c) 3503(b) 3503(b) MOTOR, Electric, A. C. These motors for alternating current are of the split phase induction type, without commutator or brushes. The assembly consists of four essential parts: the stator, carrying the winding; the rotor, or revolving element, and two end shields supporting the shaft. Pulleys — Single groove for round belt, 2-inch pitch diameter, furnished with Nos. IS and 16 frames, 2^-inch pitch diameter furnished with No. 14 frame. Data Frame H. P. Volts Load Speed Cycles Net Wgt. Price 18 1/10 110 1125 60 23 $35.12 18 1/10 220 1125 60 23 39.90 16 1/8 110 1125 60 28 42.68 16 1/8 220 1125 60 28 43.44 14 1/6 110 1125 60 32 49.22 14 1/6 220 1125 60 32 50.00 18 1/8 110 1725 60 23 38.08 18 1/8 220 1725 60 23 38.86 16 1/6 110 1725 60 28 41.62 16 1/6 220 1725 60 28 42.40 14 1/4 110 1725 60 32 48.04 14 1/4 220 1725 60 32 48.82 3503(d) 3503 (c) MOTOR, Pulleys, with shaft and bearings, as shown in illustration, for connecting engine with other machinery. Diameter of pulleys, 1, 2, 3 and 4 inches Net $1.50 3503(d) MOTOR, Universal Laboratory, 60 H. P., suitable for both alternating and direct current; complete with rheostat and plug and connecting cord . . Net 17.50 i When ordering, be sure to state voltage.) 214 A. DAIGGER & COMPANY, CHICAGO, U. S. A. MOULDS 3504 3506 3504 MOULDS, Ingot, or Bullion, making a bar Il/2xll/2x8 inches, with slide to cast any length desired $1.50 3506 MOULDS, Ingot, quadruple, for sample bars . 1.00 3508 3509 3508 MOULDS, Pouring Iron, with handles, 2 cavities drilled smooth. l.CO 3509 MOULDS, Pouring. Heavy solid iron, with 2 conical depressions, 2^ inches diameter, 1^ inches deep, wood handles, for crucible and scori- fication assays, each 1-50 3509(a) 3509(a) MOULDS, Pouring. Heavy, solid iron, with 6 conical depressions, 2^4 inches diameter, 15^ inches deep, solid iron handle. The slag will cool rapidly, each 3.00 3509(b) MOULDS, Pouring. Same as above, but with 8 depressions, each 5.00 3509 (c) MOULDS, Pouring. As above, with 6 conical depressions, 2 inches diame- ter, \y% inches deep, with iron ring handle, each 3.00 3509(d) 3510 3509(d) MOULDS, Pouring. For large crucibles, one only large depression, 6 inches diameter, 5 inches deep, each 80 3510 MOULDS, Iron, with handles, 3 conical cavities turned inside. . . 1.00 3512 3516 3512 MOULDS, Iron, with 12 conical cavities 1.00 3516 MOULDS, Cast Iron, 6 cavities, with handle .90 LABORATORY SUPPLIES AND CHEMICALS 215 3519 3518 3518 MOULDS, Pouring, Cast Iron, with 25 spherical depressions; for crucible or scorification assays $1.50 3519 MOULDS, Pouring, as above, with 12 spherical depressions. 3520 3520 MUFFLERS, Denver. Order by letters or numbers and shape. 2.00 Outside Measurements Always used in specifying Muffles Inside Measurements For determining capacity Letter Width, Inches Length Inches Height, Inches Shape Width, Inches Side Height, Inches Greatest Height, Inches Each AAA AA BB cc c HH H CJ CF F FF D CD DD G GG KK KKK K LLL L LL FHN I II CII 2/2 3 3/2 43/4 43/4 VA 554 6 6 6 6 6 7 7 7 7 7 8 8 8 9 9 9 9 10 10 10 6 7 ' 6 8 8 7^ 10 # 12 9 10 10 12 10 ioi/2 12 12 14 12 13 14 14J4 15 15 16 16 16 16J4 1& 254 2/ 3 3 4y4 V/8 4 4 4 4 4 434 43/4 5 4^ 5 5 4^ 5 5/2 53/4 53/4 6 6/ 6?4 63/4 2 2 2 2 2 2 2 2 2 2 3 3 2 3 4 3 3 3 2 3 3 3 3 3 2 3 3 $0.50 .50 .50 .60 .60 .60 .75 .90 .75 .75 .75 .90 .75 .75 1.00 1.00 1.20 1.15 1.20 1.25 1.50 1.50 1.50 1.50 1.75 1.75 1.75 &A 5J4 5^4 5^4 4% 6 5^ 6Ji 6 6 $5/& 6y4 7 1# 75/6 73/4 1H 83/g 8/ 8/2 1^4 2 3^4 3/2 •m V/8 sy& y/2 3/ 4^ B5/& VA 4 33/4 4 4 4/2 4| 434 5 5^ 53/6 334 2y2 23/4 2/2 %y2 234 234 314 2% 3^ 3^ 216 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3521 3521 MUFFLES — Alundum, recommended for furnaces, heated by electricity, may be wound with a resistor, covered with alundum cement. Rectangular shape, open at both ends. No 201 202 203 204 Length, insfde, inches 7 10 12 14 Width, inside, inches 3 & 4J4 5% 7l/2 Height inside, inches 2% 3 3^ 5^4 Each ... .• $2.50 4.00 5.00 7.00 The above muffles may be had with one end closed at 10% additional to the above prices. Other sizes and shapes made to order. 352l(a) 3521 (a) 3521 (b) MUFFLES — Fused Silica, withstand sudden and extreme change of tempera- ture. Suitable for use in gas, oil or electric furnaces, or may be directly wound with resistance wire for electric heating. D shape. Length, inches .............................. 4^ V/2 Width, inches ............................... . &A 4ji Height, inches . , ............................. 2^ 3^ Each ........................................ $1.85 2.50 Prices for other sizes upon application. Ql/2 Vl/2 6^ 5^ 6^ 4^ 5 ^ 3.75 4.25 5.00 MUFFLES — Fused Silica, as above, but of rectangular shape. Length, inches ...................................... . ll/& 10 12 Width, inches ........................................ 3 43^ 5l/2 Height, inches ....................................... 3 2% 4 Each ................................................. $2.50 3.75 5.00 Prices for other sizes upon application. LABORATORY SUPPLIES AND CHEMICALS 217 NITROGEN DETERMINING APPARATUS 3522 3523(a) 3522 CONDENSER (Kjeldahl's), copper, tin-lined, with six coils of pure block tin, size of apparatus 24 inches long, &l/2 inches wide, 14 inches deep; height, including legs, 24 inches. Price • $25.00 3523 CONDENSER (Kjeldahl's), same as above, but with ten coils; size of ap- paratus, 40 inches long, 6^ inches wide, 14 inches deep; height, in- cluding legs, 24 inches. Price 42.50 3523 (a) DIGESTING SHELF (Kjeldahl's), round form, 1G inches diameter, 10 inches high, with six burners, each with stop-cock 21.50 3524 3525(a) 3524 DIGESTING SHELF (Kjeldahl's), oblong form, made of sheet iron, with rod to support the flasks. The shelf is supported on adjustable legs. Six burners in a row, each with stop-cock. .Size of apparatus, 24 inches long, 5^2 inches wide, 9J/ inches high. Price . 18.00 3525 DIGESTING SHELF (Kjeldahl's), oblong form, with ten burners. Size of apparatus, 40 inches long, $y2 inches wide, 9^ inches high. Price 24.00 3525(a) DIGESTING SHELVES (Kjeldahl's), electrically heated, oblong form, 5J4 inches wide and 9 inches high, made of sheet iron, with rod to support the flasks. Each Heater, which is Zl/2 inches diameter, is a unit, either one or all may be used at one time, as desired. Digesting Shelf — six heaters, 24 inches long 70.00 Digesting Shelf — ten heaters, 40 inches long. . . 100.00 218 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3525(b) 3525(b) KJELDHAL DIGESTING SHELVES, Johnson, as used in the Connecti- cut Agricultural Experimental Station; made of heavy cast iron, &l/2 inches wide and 8*4 inches high. The holes are $l/2 inches from center to center, have projections shaped to support Kjeldahl Flasks; heated by a row of Bunsen Burners, each with a stopcock. The Flasks are supported by resting their necks in a large lead pipe con- nected with the flue for carrying away the fumes; the lead pipe rests on adjustable stand. Complete as shown above, in three sizes: For 6 Flasks, length 29 inches $30.00 For 10 Flasks, length 46 inches 40.00 For 13 Flasks, length 60 inches... . 50.00 3527 3527 KJELDAHL DISTILLING APPARATUS, Kjeldahl's, on stand, espe- cially suited to the requirements of water and food chemists in deter- mination of Ammonia and Nitrogen. Very convenient form, made to stand on the table as shown in above illustration or to hang on the wall, with adjustable Bunsen Burners which can be individually regulated to any size flame. Condenser is made of heavy polished copper, tinned inside, and with block tin condenser tubes. Size, 32 inches long, 24 inches- high and 3 inches wide. The stand is 8^ inches high 55.00 3527(a) DISTILLING APPARATUS, same as above, but to hang on wall 50.00 LABORATORY SUPPLIES AND CHEMICALS 219 3531 DISTILLING APPARATUS, for carrying on as many as six distillations at one time, for ex- periment stations and other large laboratories. Adapted to Kjeldahl distillation, Leffmann, Beam and Reichert butter methods, wine and spirit determinations, etc. This is a very con- venient apparatus, occupying only 15 inches square of table room. It is substantially made, the condenser of copper, with block tin tubing, gas connections, adjustable burners and ring supports. Extreme height of the apparatus is^ 44 inches. Price $65.00 3531 3532 3538 3532 SCHIFF'S Nitrometer, graduated to 100 c.c., on support, with reservoir and and clamp and connections 7.50 3536 LUNGE'S Nitrometer, for saltpetre, nitroglycerine, etc., graduation 50 c.c. in 1/10°, without support 7.50 3538 LUNGE'S Nitrometer for saltpetre, soda nitrate, nitroglycerine, etc., gradu- ated from 100 to 140 c.c. in 1/10°, without support 7.50 220 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3554 3556 3539 3557 3557(a) 3539 NITROMETER, duPont's. A most accurate apparatus for the analysis of nitric acid and mixed acids; used by many manufacturers of ex- plosives, etc. Complete set of glass parts $26.00 3541 Ditto, separate glass parts. E B D J E F C $2.00 2.50 6.50 7.50 2.00 0.60 7.00 3554 KJELDAHL'S Connecting Bulb Tubes, 50 c.c., each 50 3556 KJELDAHL'S Connecting Bulb Tubes, Hopkins' form v . . .50 3557 KJELDAHL'S Connecting Bulb, Kjeldahl's, modified by C. A. Jennings, having a tubule in the bulb, and designed especially for water analysis; allows of the introduction of water or permanganate solution without removing the stopper, eliminating the danger of the introduction of ammonia into the flask 75 3557(a) KJELDAHL'S Connecting Bulb, Brown's, cylindrical shape 80 Nitrogen Bulbs, see Bulbs. OIL TESTERS 3559 3559(a) 3559 ELLIOTT Tester for flash points of illuminating oils only, with standard thermometer 15.60 3559(a) FOSTER Tester for flash points of illuminating oils only, with standard thermometer . ..18.00 LABORATORY SUPPLIES AND CHEMICALS 221 3559(b) 3559(c) 3559(d) 3559(e) 3559(k) 3559(m) 3559(b) CELERITAS Improved Open Tester, for flash and fire tests of illumin- ating oil, with standard thermometer. Equipped with gas flame test- ing burner. The flame from the gas burner can be regulated by stopcock; must be no larger than the white button shown in cut at left of thermometer. The testing burner is used with wheel for the dip test; without wheel for the bar or cross test $10.00 3559(c) CLEVELAND Open Tester, for flash and fire tests of high grade lubri- cating oil. This is the most substantial tester on the market; it is made of heavy brass castings, complete with standard solid glass thermometer 80° to 640° F., with spirit lamp and Bunsen burner for gas 18.00 3559(d) CLEVELAND Open Tester, for flash and fire tests, small size, similar to No. 3559 (c), but of lighter construction. Complete with thermome- ter and Bunsen burner 12.00 3559(e) Large Pyrometer, for flash and fire tests of illuminating oils, with standard thermometer 50° to 170° F 32.40 3559(f) Large Pyrometer, for flash and fire tests of illuminating oils, with standard thermometer 80° to 250° F 32.40 3559(g) Large Pyrometer, for flash and fire tests of lubricating oils, 80° to 400° F., with Bunsen burner and thermometer . 38.90 3559(h) Large Pyrometer, for flash and fire tests of lubricating oils, 200° to 600° F., with Bunsen burner and thermometer 38.90 3559(j) Small Pyrometer, for flash and fire tests of illuminating oils, 50° to 170° F., with standard thermometer 28.80 3559(k) Small Pyrometer, for flash and fire tests of illuminating oils, 80° to 250° F., with standard thermometer . 28.80 3559(m) ABEL Closed Oil Tester, for illuminating oils; complete with two Standard Ivory Scale Thermometers. Each cup examined and passed by the Royal Petroleum Association of England. Adopted as standard by the British Government. In hardwood case, with directions for use . 75.00 222 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3559(n) For Low Flashing Oils 3559(p) For High Flashing Oils 3559(n) U. S. Bureau of Mines Flash Tester, for oil flashing from 0° to 110° C. Three thermometers, cup lifter, burner and Aneroid barometer. Complete in case with directions for operation $135.00 A. Porcelain Scale Thermometer for oil cup. Range 0° to 50° C. in l/2° graduations. Round bulb 7.50 B. Same as No. A, except Range 40° to 110° C 7.50 C. Porcelain Scale Thermometer, for water bath. Range 0° to 85° C. 1° graduations. Cylinder bulb 7.50 3559(p) U. S. Bureau of Mines Flash Tester, for oil flashing from 100° to 310° C. Two thermometers, cup lifter and burner. Complete in case with directions for operation 120.00 A. Porcelain Scale Thermometer for oil cup. Range 100° to 210° C. in 1° graduations. Round bulb 7.50 B. Same as No. A, except range 200° to 310° C 7.50 C. Same as No. A, except range 300° to 410° C 9.00 D. Oil Containing Cup only for Nos. 3559(n) and 3559(p) 7.50 3559(q) REDWOOD'S Viscosimeter for Lubricating Oil, with flask and ther- mometers. Certified for accuracy by the Redwood Laboratories. In case. One of the standard forms of Viscosimeters, extensively used in this country and abroad, especially in England 75.00 A. lOJ^-inch Engraved Stem Thermometer for No. 3559 (q). Range 50° to 145° F., in y2° graduations. For oil container 2.25 B. 12-inch Engraved Stem Thermometer for No. 3559 (q). Range 50° to 160° F., in 1° graduations. For water bath 2.25 3559 (r) REDWOOD'S Viscosimeter for Fuel Oil, with flask and thermome- ters. Certified for accuracy by the Redwood Laboratories 127.50 LABORATORY SUPPLIES AND CHEMICALS 223 3559(s) 3560 3560(a) ENGLER'S Viscosimeter; latest improved form; insulated oil container cover, deep water bath with stirrer; gold-plated oil container, plat- inum outlet. Complete with thermometers, ring-burner and flask. This instrument is considered one of the most accurate and reliable instruments by the best authorities in this country : $75.00 8^-inch Porcelain Scale Thermometer for No. 3559(s). Range 10° to 50° C, in 1° graduations 6.00 Same as No. 3559(s), except Range 10° to 150° C 7.50 Same as No. 3559(s), except Range 10° to 200° C 9.00 Flask, graduated 100 c.c-100 c.c., for No. 3559 (s) 4.50 S560 SCOTT'S Viscosimeter, an accurate, reliable instrument, designed by Mr. W. G. Scott. This instrument is so constructed that the reservoir may be readily removed and cleaned. The results obtained compare closely with those of higher priced instruments. Each instrument is accu- rately standardized and has the time in seconds and fractions thereof required for 50 c.c. of distilled water at 70° F. to be discharged stamped upon the handle of the cup. The temperature of the liquid to be tested is accurately regulated by water or liquids of higher boiling points which surround the reservoir. The Viscosimeter with good thermometer graduated to 212° F. in single degrees and with a 50 c.c. graduated cylinder 15.00 For taking the viscosity of lubricating oils an accurate finely gradu- ated thermometer is quite essential. For this purpose we are prepared to supply a high grade thermometer graduated from 50° to 120° F., in 1-5 degrees ,. . 5.00 3560(a) ENGLER'S Viscosimeter, modified by Ubbelohde, for very fluid liquids, such as petroleums. Complete with two thermometers.. . 85.00 3560(b) 3560(b) Viscosimeter, as adopted by the Pennsylvania Railroad, delivers 100 c.c. of distilled water in 34 seconds at a temperature of 100° F 2.00 224 A. DAIGGER & COMPANY, CHICAGO, U. S. A. 3561 3563 3561 C. J. TAGLIABUE Improved Viscosimeter, with improved stop watch, and choice of two nipples, arranged for viscosity tests at 70°, 10D° or 212° F. Unless otherwise ordered, the C. J. Tagliabue Viscosi- meter will be equipped with 100° and 212° nipples .' . . .$102.00 3563 SAYBOLT'S Viscosimeter, for testing cylinder, valve and similar oils with bath at 212° F., and the oil at 210° F.; for testing reduced black oils, with bath about and oil at 130° F.; for testing neutral, spindle, paraffine, red and other distilled oils, with bath about and oil at 100° F, or at any temperature from 70° to 212° F. The Saybolt Viscosimeter is equipped with an electric heating device, a U-tube steam heater and a gas burner, in addition to a turn- table stirring arrangement, which permits anyone to work easily and accurately up to the temperature of boiling water. The bath liquid prescribed is a paraffine, pale engine oil, of about 350° to 400° flash, to be used for viscosity tests at all temperatures. The electric heating medium for the oil bath is an immersion — Electric Element (110V.X5.5 Amperes=G05 Watts) which is easily adjustable to the bath, for immersion or removal, and which is supplied with cord for attachment to any lamp socket, direct or alternating current. (220-volt can also be supplied to order.) With Stop-Watch 82.00 Without Stop-Watch 75.00 Turn-table arrangement only, with steam, gas and electric heating attachments for equipping old-style Saybolt Viscosimeters 25.00 In ordering Turn-table, please give us the number which appears on the inner oil tube of your Viscosimeter. (JO cc. Receiving Glass 2.50 LABORATORY SUPPLIES AND CHEMICALS 225 3565 3565 (g) 3565 DISTILLATION Apparatus, For testing, boiling and end point of gasoline, etc. This apparatus has been designed and perfected along scientific lines, and admirably fills a long-felt need for a simple and efficient apparatus for the distillation and analysis of gasoline, blended gasolines, and paint thinners other than turpentine. It has been adopted by the American Society for Testing Materials, also the Independent Oil Men's and Western Jobbers' Associations. Complete with Bunsen burner ; $45.00 Complete with Alcohol Lamp 55.00 3565(a) GRADUATED SETTLING TUBES, 16x1, graduated 0° to 100° 2.00 3565(b) PROOF GLASSES, 6 to 7-inch, with heavy bottoms 50 3565 (c) PRECIPITATING