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