index of advertised products - ACS Publications

INDEX OF ADVERTISED PRODUCTS A l l products which have appeared in advertisements in ANALYTICAL CHEMISTRY during the period M a y 1956 through April 1957 are included in this detailed index with the exception of the products listed in Part I of this April issue. Indexed in Part I.

The Part I advertised products are

Because some companies did not describe all of

their products and services in their advertisements, they were requested to provide short descriptions of their full line.

These de-

scriptions appear in the Company Directory beginning on page 57 A .

Equipment and Instruments 1. A b s o r p t i o n Cells American Instrument Co., Inc. 1 9 5 6 , June 4 6 A Klett M f g . Co. 1956, Mây 6 3 A ; June 3 8 A ; July 2 2 A ; A u g . 5 7 A ; Sept. 7 9 A ; Oct. 4 5 A ; Nov. 8 9 A ; Dec. 71 A . 1957, Jan. 8 5 A ; Feb. 81 A , Mar. 3 7 A , 7 3 A ; A p r . Part II 51A, 55A

6. Analyzers, Gas Cambridge Instrument, Co., Inc. 1956, Oct. 6 5 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Hallikainen Instruments 1 9 5 6 , May 5 6 A Kruger, Harold, Instruments 1 9 5 6 , June 5 3 A ; A u g . 5 0 A Sorvall, Ivan, Inc. 1 9 5 7 , A p r . Part II 4 7 A

2. A c i d Dispensing Units Laboratory Construction Co. 1956, Sept. 1 4 A ; O c t . 1 0 A ; Nov. 2 2 A

7. Analyzers, Hydrogen Baker & Co., Inc. 1957, A p r . Part II 1 3 A Hallikainen Instruments 1 9 5 6 , May 5 6 A Laboratory Equipment Corp. 1 9 5 6 , Dec. 3 4 A 1 9 5 7 , Jan. 7 1 A

3.

Amplifiers

Applied Physics Corp. 1 9 5 6 , May 4 2 A ; June 4 8 A ; A u g . 1 0 A ; Sept. 4 8 ^ , · Nov. 6 4 A , Dec. 3 2 A 1957, Mar. 5 7 A Atomic Instrument Co. 1956, June 4 9 A Consolidated Electrodynamics Corp. 1 9 5 7 , Feb. 6 A - 7 A Doelcam, A Div. of MinneapolisHoneywell Regulator Co. 1 9 5 6 , June 4 3 A ; A u g . 1 5 A 4. A n a l y z e r s , Boron Laboratory Equipment Corp. 1 9 5 6 , July 2 6 A 5. A n a l y z e r s , Carbon Dietert, Harry W . , Co. 1956, July 5 9 A , Nov. 9 3 A 1 9 5 7 , Jan. 6 9 A ; Feb. 3 2 A Laboratory Equipment Corp. 1 9 5 6 , Nov. 7 2 A 1 9 5 7 , Feb. 8 0 A Lindberg Engineering Co. 1 9 5 6 , June 6 7 A 1957, A p r . Part II 4 3 A 38 A

·

ANALYTICAL CHEMISTRY

8. A n a l y z e r s , Infrared Applied Physics Corp. 1956, May 4 2 A ; June 48A,· A u g . 1 0 A ; Sept. 4 8 A ; O c t . 4 4 A ; Nov. 64A.- Dec. 3 2 A 1957, Feb. 7 3 A ; Mar. 5 7 A

12. A n a l y z e r s , Sulfur Consolidated Electrodynamics Corp. 1 9 5 7 , Feb. 6 A - 7 A Dietert, Harry Ψ., Co. 1 9 5 6 , July 5 9 A ; Nov. 9 3 A 1 9 5 7 , Jan. 6 9 A ; Feb. 3 2 A Laboratory Equipment Corp. 1956, Oct. 5 8 A 1 9 5 7 , Feb. 8 0 A ; Mar. 7 3 A Lindberg Engineering Co. 1 9 5 6 , June 6 7 A 1957, Feb. 9 9 A ; A p r . Part II 43A 13. A n a l y z e r s , Ultraviolet Applied Physics Corp. 1 9 5 6 , May 4 2 A ; June 4 8 A ; A u g . 1 0 A ; Sept. 4 8 A ; Oct. 4 4 A ; N o v . 6 4 A , Dec. 3 2 A 1 9 5 7 , Feb. 7 3 A ; Mar. 5 7 A Consolidated Electrodynamics Corp. 1 9 5 7 , Feb. 6 A - 7 A 14. Anemometers Gurley, W . & L. E. 1 9 5 6 , June 5 6 A ; O c t . 8 1 A 1 9 5 7 , Mar. 6 7 A

9. Analyzers, Nitrogen A l o e , A . S., Co. 1956, N o v . 5 1 A

15. Atom Models La Pine, Arthur S., & Co. 1 9 5 6 , May 3 3 A ; Nov. 4 3 A

10. Analyzers, O x y g e n Baker & Co., Inc. 1 9 5 7 , A p r . Part II 1 3 A Becktnan, Arnold O . , Inc. 1 9 5 7 , A p r . Part II 1 6 A Consolidated Electrodynamics Corp. 1 9 5 7 , Feb. 6 A - 7 A

16. Balances a n d W e i g h t s Ainsworth, W m . , & Sons, Inc. 1 9 5 6 , June 3 6 A ; A u g . 1 4 A ; O c t . 8 6 A , Dec. 1 7 A 1957, Feb. 8 3 A ; A p r . Part II 19A American Balance Corp. 1956, Sept. 2 1 A 1 9 5 7 , Jan. 6 5 A Brinkmann, C. Α . , & Co. 1 9 5 6 , May 7 5 A ; Nov. 1 7 A 1 9 5 7 , Mar. 7 7 A Central Scientific Co. 1 9 5 6 , Sept. 1 8 A - 1 9 A

11.

A n a l y z e r s , Process Stream Hallikainen Instruments 1956, May 5 6 A

Chicago Apparatus Co. 1956, Sept. 8 3 A 1 9 5 7 , Jan. 8 5 A Fisher Scientific Co. 1956, Nov. 6 2 A 1957, Jan. 5 4 A ; A p r . Part II 27A Harshaw Scientific, A Div. of Harshaw Chemical Co. 1957, Jan. IBC,· Feb. 18 A , Mar. IBC,· A p r . Part II IBC LaPine, Arthur S., & Co. 1956, Oct. 4 2 A Macalaster Bicknell Co. 1 9 5 6 , Dec. 2 2 A Mettler Instrument Corp. 1956, May 31 A , June 5 4 A ; July 4 5 A ; A u g . 4 9 A ; Sept. IBC,· O c t . 5 2 A ; N o v . 31 A ; Dec. 2 9 A 1957, Jan. 8 A ; Feb. 1 0 A , Mar. 1 0 A ; A p r . Part II 4 A Ohaus Scale Corp. 1956, June 2 8 A ; Sept. 5 9 A ; Oct. 2 9 A ; Dec. 2 0 A 1957, Feb. 5 5 A ; A p r . Part II 15A Sargent, E. H . , & Co. 1956, Sept. 2 7 A ; Dec. 3 1 A Sauter, August, of New York, Inc. 1 9 5 6 , Nov. 4 4 A ; Dec. 5 9 A 1 9 5 7 , A p r . Part II 1 7 A Scientific Class Apparatus Co., Inc. 1956, July 2 7 A Scientific Products, Div. of American Hospital Supply Corp. 1957, Feb. IFC Thomas, Arthur H . , Co. 1956, June 6 4 A Torsion Balance Co. 1 9 5 6 , May 8 6 A ; June 1 5 A ; Sept. 65 A ; Nov. 4 1 A 1957, Mar. 6 A Welch, W . M . , M f g . Co. 1956, June 31 A,· July 5 0 A ; Sept. 39A,· O c t . 7 2 A ; Dec. 43A 1957, Mar. 4 7 A

ADVERTISED PRODUCTS GUIDE Will Corp. 1956, Nov. 7 0 A

17.

21.

Bath Coolers

LaPine, Arthur S., & Co. 1956, Sept. 7 3 A Sargent, E. H . , & Co.

1956, May 39A 18.

Baths, Temperature Controlled

Advanced Instruments, Inc. 1957, Jan. 1 8 A , A p r . Part II 28A American Instrument Co., Inc. 1 9 5 6 , June 4 6 A Blue M Electric Co. 1956, Nov. 5 2 A Fisher Scientific Co. 1957, A p r . Part II 2 7 A Hallikainen Instruments 1956, May 5 6 A Machlett, E., & Son 1956, June 1 9 A Research Specialties Co. 1 9 5 7 , A p r . Part II 4 6 A Wilkens-Anderson Co. 1956, May 4 A ; O c t . 4 A 1957, Jan. 5 3 A , A p r . Part II 6A

19.

Beakers

Nalge Co., Inc. 1957, Jan. 2 0 A

20.

22.

Hallowell Shop Equipment Div., Standard Pressed Steel Co. 1 9 5 6 , July 2 3 A Meyer-Opticraft, Inc. 1956, May 2 9 A ; J u l y 1 7 A

8A; Oct. 38A 84A; 67A,

Bomb Apparatus, Oxygen

Parr Instrument Co. 1956, Oct. 8 5 A 1957, Mar. 8 3 A , A p r . Part II 55A

23.

Bombs, Sodium Peroxide, & Accessories

Parr Instrument Co. 1956, June 7 4 A ; O c t . 85A,· Nov. 7 5 A 1957, Mar. 6 4 A

24.

Borers, Power

Sargent, E. H . , & Co. 1956, July 35A,- Nov. 5 9 A 1957, Jan. 5 9 A

25.

Benches

26.

Blenders

Patterson-Kelley Co., Inc. 1956, May 7 9 A ; July A u g . 6 3 A ; Sept. 11 A ; 5 4 A ; Nov. 1 0 A ; Dec. 1 9 5 7 , Jan. 3 0 A ; Feb. Mar. .81A Waring Products Corp. 1 9 5 6 , May 3 2 A , July Sept. 8 0 A , Nov. 8 7 A

Bottles, Special Types

Nalge Co., Inc. 1957, Jan. 2 0 A , 2 4 A , A p r . Part II 7 0 A New York Laboratory Supply Co., Inc. 1956. Oct. 3 0 A ; Dec. 7 9 A 1957, Mar. 4 1 A

27.

PUMP

WITHOUT CONTAMINATION CORROSION

OR

Burners

Central Scientific Co. 1956, A u g . 1 6 A ; Sept. 18A-19A Fisher Scientific Co. 1956, July 9 A ; Sept 9 A New York Laboratory Supply Co., Inc. 1957, Feb. 2 7 A

28.

Calorimeters

Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Klett Mfg. Co. 1 9 5 6 , May 6 3 A ; June July 2 2 A ; A u g . 5 7 A ; 7 9 A , O c t . 4 5 A ; Nov. Dec. 7 1 A 1 9 5 7 , Jan. 8 5 A ; Feb. Mar. 3 7 A ; A p r . Part II Parr Instrument Co. 1956, Oct. 8 5 A 1 9 5 7 , Mar. 8 3 A

29.

LIQUIDS GASES SLURRIES

Burets

Corning Glass Works 1956, Oct. 3 1 A 1957, Feb. 8 2 A Fischer & Porter Co. 1956, O c t . 5 8 A Greiner, Emil, Co. 1956, Nov. 5 A ; Dec. 4 2 A Kimble Glass Co., Subsidiary of Owens-Illinois 1956, June I B Q O c t . IBC 1957, Feb. IBC Machlett, E., & Son 1956, Sept. 3 3 A Manostat Corp. 1 9 5 6 , May 6 7 A ; O c t . 47 A Rochester Scientific Co. 1 9 5 7 , A p r . Part II 6 8 A

38A, Sept. 89A; 81 A ; 55A

Cameras, X-Ray

North American Philips Co., Inc. 1956, June 5 8 A , 61 A ; Sept. 4 4 A - 4 5 A ; Oct. 6 2 A - 6 3 A ; Dec. 6 7 A 1957, A p r . Part II 7 A 30.

Carboys

Nalge Co., Inc. 1957, Jan. 2 4 A

31.

Cathetometers

Ealing Corp. 1957, Jan. 2 6 A Eberbach Corp. 1 9 5 6 , Sept. 7 9 A Welch, W . M . , Mfg. Co. 1 9 5 6 , Nov. 5 5 A

33.

Wavelike Motion of Steel Fingers Forces Material Through Tubing C a p . 2 - 1 0 cc. p e r m i n . to 2 5 0 G . P . M Prices $ 6 0 . 0 0 to $ 5 5 0 . 0 0 d e p e n d i n g o n size a n d accessories Write for Descriptive Literature

SIGMAMOTOR, INC.

47 North Main St. · Middleport, N.Y. Circle No. 40 A on Readers' Service Card, page 53 A

40 A

·


34.

Chains and Sprockets

Sierra Engineering Co. 1956, June 4 0 A 35.

Chromatographs

Burrell Corp. 1956, June 7 6 A ; Sept. 6 4 A 1 9 5 7 , Jan. 4 3 A Consolidated Electrodynamics Corp. 1956, A u g . 1 3 A ; Nov. 3 4 A 1957, Feb. 6 A - 7 A ; Mar. 1 6 A Fisher Scientific Co. 1956, A u g . IFC Harshaw Scientific, A Div. of Harshaw Chemical Co. 1956, Nov. 6A,· Dec. 6 A Podbielniak, Inc. 1956, Nov. 1 1 A Scientific Glass Apparatus Co., Inc. 1 9 5 6 , Sept. 2 3 A Scientific Instruments Div., Beckman Instruments, Inc. 1956, July 5 5 A ; Sept. 51 A ; Nov. 2 3 A 1957, Jan. 7 7 A ; Feb. 3 A ; Mar. 3 2 A - 3 3 A Wilkens Instrument & Research, Inc. 1957, Mar. 6 6 A

Will Corp. 1956, Dec. 20A

Carts, Laboratory

Laboratory Construction Co. 1 9 5 6 , May 2 3 A ; June 2 1 A

32.

LaPine, Arthur S., & Co. 1956, Sept. 7 3 A Nalge Co., Inc. 1956, July 1 4 A ; Sept. 6 4 A 1957, A p r . Part II 7 0 A Scientific Glass Apparatus Co., Inc. 1956, July 2 7 A Sorvall, Ivan, Inc. 1956, May 6 2 A ; June 5 3 A , A u g . 4 7 A ; Sept. 6 2 A ; O c t . 1 2 A ; Nov. 4 0 A ; Dec. 1 4 A 1957, Jan. 2 4 A , Feb. 7 2 A ; Mar. 8 3 A ; A p r . Part II 4 7 A Spinco Div., Beckman Instruments, Inc. 1 9 5 6 , May 61 A ; Sept. 75 A ; Oct. 5 A 1957, Feb. 9 7 A ; Mar. 7 1 A Wilkens-Anderson Co. 1956, Nov. 4 A

Centrifuges and A c cessories

American Instrument Co., Inc. 1 9 5 6 , June 4 6 A Chicago Apparatus Co. 1 9 5 7 , Mar. 4 1 A Clay-Adams, Inc. 1 9 5 7 , Mar. 8 9 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A International Equipment Co. 1956, June 5 0 A ; A u g . 4 0 A , Oct. 4 8 A ; Dec. 5 2 A 1957, Feb. 6 6 A Kern Laboratory Supply Co. 1957, Feb. 7 8 A

36.

Chromatography cessories

Ac-

Fischer & Porter Co. 1956, Sept. 81 A ; Nov. 8 A Gow-Mac Instrument Co. 1 9 5 6 , A u g . 5 0 A ; Sept. 8 3 A , Oct. 40A 1957, Mar. 6 3 A Greiner, Emil, Co. 1956, May 5 A 1957, Feb. 6 2 A Harshaw Scientific, A Div. of Harshaw Chemical Co. 1956, June 6 A ; A u g . 6 A ; Sept. 6 A ; O c t . 6 A ; Nov. 6 A ; Dec. 6 A Manostat Corp. 1956, Nov. 3 7 A Merck & Co., Inc. 1957, A p r . Part II 3 3 A Packard Instrument Co. 1956, June 2 4 A ; O c t . 2 3 A ; Dec. 2 8 A Research Equipment Corp. 1956, May 5 5 A ; June 4 0 A ; Sept. 5 4 A ; Nov. 2 6 A 1957, Jan. 6 8 A ; A p r . Part II 22A

Research Specialties Co. 1956, June 7 6 A 1957, Jan. 7 9 A Schaar & Co. 1956, M a y 4 8 A ; Sept. 67 A,· Nov. 6 0 A 1957, Jân. 4 6 A Scientific Instruments Div., Beckman Instruments, Inc. 1957, Jan. 77A,· Feb. 3 A Sorvall, Ivan, Inc. 1957, A p r . Part II 4 7 A W i l l Corp. 1956, May 5 4 A ; Dec. 2 0 A

37.

Clamps and sories

Acces-

Fisher Scientific Co. 1956, June 7 0 A Greiner, Emil, Co. 1956, A u g . 3 0 A Thomas, Arthur H . , Co. 1956, July 3 4 A ; A u g . 3 4 A

38.

Colorimeters

Bausch & Lomb Optical Co. 1956, Dec. O B C Coleman Instruments, Inc. 1956, May 7 0 A ; June 11 A ; July 5 2 A ; A u g . 5 6 A , Sept. 7 2 A ; O c t . 11 A , 7 9 A ; N o v . 80A 1957, Jan. 7 4 A ; Feb. 53 A ; Mar. 7 6 A Fisher Scientific Co. 1957, A p r . Part II 2 7 A Klett M f g . Co. 1956, M a y 3 2 A ; June 4 2 A , July 6 6 A ; A u g . 2 8 A ; Sept. 8 7 A ; Oct. 6 9 A ; Nov. 8 7 A ; Dec. 2 5 A 1957, Jan. 2 9 A ; Feb. 4 8 A , Mar. 3 7 A , 7 3 A ; A p r . Part II 51 A , 5 5 A Photovolt Corp. 1956, June 4 4 A 1957, Jan. 31 A , A p r . Part II 3A Wilkens-Anderson Co. 1956, July 4 A

39. Color Standards Klett Mfg. Co. 1956, May 3 2 A , 6 3 A ; 3 8 A , 4 2 A ; July 2 2 A , Aug. 2 8 A , 5 7 A ; Sept. 87A; Oct. 45A, 69A; 8 7 A , 8 9 A ; Dec. 2 5 A , 1957, Jan. 2 9 A , 85A,· 4 8 A , 81 Α.- Mar. 3 7 A , A p r . Part II 51 A , 5 5 A Taylor, W . Α . , * Co. 1957, Feb. 8 6 A

40.

June 66A, 79A, Nov. 71A Feb. 73A,

Combustion Equip ment

American Platinum Works 1956, O c t . 6 9 A 1957, Jan. 71 A , A p r . Part II 12A Coors Porcelain Co. 1956, May 8 0 A ; O c t . 6 1 A 1957, Feb. 8 9 A Laboratory Equipment Corp. 1956, June 1 2 A ; Sept. 6 0 A ; Dec 6 A 1957, Feb. 8 0 A Lindberg Engineering Co. 1956, June 6 7 A 1957, A p r . Part II 4 3 A Parr Instrument Co. 1956, June 7 4 A ; O c t . 85 A ; Nov. 7 5 A 1957, Mar. 6 4 A

Sargent, E. H . , & Co. 1957, Mar. 5 9 A Thermal American Fused Quartz Co., Inc. 1957, A p r . Part II 2 8 A 41. Comparators Baird Associates-Atomic In strument Co. 1956, N o v . 3 2 A Klett M f g . Co. 1956, M a y 6 3 A ; June 38 A ; July 2 2 A ; A u g . 5 7 A ; Sept. 7 9 A ; O c t . 4 5 A ; Nov. 8 9 A ; Dec. 7 1 A 1957, Jan. 8 5 A ; Feb. 81 A ; Mar. 3 7 A ; A p r . Part II 5 5 A Taylor, W . Α . , & Co. 1957, Feb. 8 6 A 42.

Condensers

Laboratory Construction Co. 1956, May 2 3 A ; June 2 1 A 1957, Feb. 5 7 A , Mar. 6 8 A ; A p r . Part II 6 9 A Scientific Glass Apparatus Co., Inc. 1956, M a y 25 A 43.

lAB (TASS

MULTIDIALYZER

SAMPLE VOLUME 1 to 3,000 m l Uniq ue

Features:

1. Each sample dialyzed against its own buffer. 2. Complete dialysis by agitating both buffer and sample. 3. Portions of sample and buffer may be removed from standard unit with out disassembly. 4- Dialysis time reduced to less than two hours for most applications. 5. Accessory available for continuous dialysis with temperature control.

FLASH-EVAPORATOR

C o n d u c t i v i t y Bridges

32-922FE-2 for batch evaporation complete motor, rheostat, 500 watt heater, 2 liter evaporator and con denser flasks with T/S 24/40 but without thermo-regulator $215.50

& Cells Industrial Instruments, Inc. 1956, June 7 7 A 1957, Mar. 8 6 A Sorvall, Ivan, Inc. 1957, A p r . Part II 4 7 A 44.

32-922FE-2C for con tinuous or batch opera tion complete with motor rheostat, 500 watt heater, 2 liter evapora tor and condenser flasks with standard tapered joints, thermo-regulator and complete glassware for batch operation $330.00

Controllers

Advanced Instruments, Inc. 1957, Jan. 1 8 A 45.

Crucibles

Baker & Co., Inc. 1956, June 2 5 A ; July 2 9 A ; A u g . 1 2 A ; Sept. 8 5 A ; N o v . 50A Coors Porcelain Co. 1956, N o v . 8 6 A 1957, Jan. 6 6 A Coming Glass Works 1956, July 7 0 A ; Dec. 4 0 A Laboratory Equipment Corp. 1956, Sept. 6 0 A ; Dec. 6 A Thermal American Fused Quartz Co., Inc. 1957, A p r . Part II 2 8 A

46.

ZONE ELECTROPHORESIS A complete apparatus for paper strips and starch

For RESEARCH, CLINICAL OUTPUT, LARGE SCALE SEPARATIONS.

Cryoscopes

Advanced Instruments, Inc. 1957, Jan. 1 8 A ; A p r . Part II 28A

47.

Current Measuring In struments

Keithley Instruments, Inc. 1956, Sept. 2 5 A ; O c t . 3 0 A ; Nov. 4 6 A 1957, Jan. 2 2 A ; Mar. 8 9 A ; A p r . Part II 6 6 A

48.

Cylinders, Stainless Steel

H o k e , Inc. 1956, Dec. 3 7 A 1957, Feb. 4 4 A 49.

Densitometers

Baird Associates-Atomic Instru ment Co. 1956, N o v . 3 2 A Bausch & Lomb Optical Co. 1956, O c t . O B C

blocks

Unique

Features:

1 . Uses 2 widths of paper strips, XA" and 1 ' . 2. Separates 10 ml. samples by rapid and precise starch tech nique. 3. Furnished w i t h sample applicator, pre-cut strips, wicks, buffer, reagents, dyeing and washing pans, record folders, etc. 4. Paper carrier holds strips taut throughout electrophoresis. 5. Power supply designed especially for research. 6. Complete illustrated operating instructions provided. Nothing

to add but

water!

LABORATORY GLASS & INSTRUMENTS CORP. 5 1 6 W . 147th Street, New York 5 1 , Ν . Υ. Circle Nos. 41 A-1, 41 A-2, 41 A-3 on Readers' Service Card, page 53 λ VOL. 2 9 , N O . 4 , APRIL 1 9 5 7

·

41

A

ADVERTISED PRODUCTS GUIDE Photovolt Corp. 1956, May 7 7 A ; June 4 4 A ; July 3 0 A ; A u g . 3 9 A ; Sept. 56A,- O c t . 7 5 A ; N o v . 65A,· Dec. 5 6 A 1 9 5 7 , Jan. 31 A , Feb. 31 A , Mar. 2 3 A ; A p r . Part II 3 A Research Equipment Corp. 1 9 5 6 , Sept. 5 4 A ; Nov. 2 6 A Schaar & Co. 1956, Sept. 48A,· Nov. 6 0 A 1957, Jan. 4 6 A Welch, W . M . , Manufacturing Co. 1 9 5 6 , May 6 8 A ; Sept. 7 0 A ; Dec. 6 2 A

50.

Desiccators

Corning Glass Works 1 9 5 6 , July 7 0 A ; Dec. 4 0 A

51.

Dialysis Apparatus

Laboratory Class & Instruments Corp. 1 9 5 6 , July 6 7 A ; Sept. 8 3 A ; Dec 3 7 A 1957, A p r . Part II 4 1 A

52.

Diffraction Units

North American Philips Co., Inc. 1 9 5 6 , June 5 7 A , 5 8 A , 5 9 A , 6 0 A , 61 A ; Sept. 4 4 A - 4 5 A ; O c t . 6 2 A - 6 3 A , · Dec. 6 7 A 1957, A p r . Part II 7 A 53.

Dipole Moment Apparatus A R K A Imports 1956, A u g . 5 7 A 54.

Distillation A p p a r a t u s & Accessories A c e Class, Inc. 1957, Jan. 4 2 A Barnstead Still & Demineralizer Co. 1956, Sept. 2 9 A 1 9 5 7 , Jan. 62A,· Feb. 44A,Mar. 6 2 A Fisher Scientific Co. 1956, June IFC 1957, A p r . Part II 2 7 A Greiner, Emil, Co. 1 9 5 6 , May 5 A 1 9 5 7 , Feb 6 2 A Machlett, E., & Son 1956, June 1 9 A ; A u g . 2 4 A 1957, Jan. 8 7 A , Mar. 8 7 A Manostat Corp. 1956, N o v . 3 7 A Research Equipment Corp. 1956, June 40A ( - Sept. 5 4 A ; Nov. 2 6 A Schaar & Co. 1956, Sept. 4 8 A ; Nov. 6 0 A 1957, Jan. 4 6 A Todd Scientific Co. 1956, May 1 1 A 55.

Dryers

Bartlett, C. O . , & Snow Co. 1957, Mar. 4 0 A 56.

Electroanalysis paratus Eberbach Corp. 1 9 5 6 , June 3 8 A 1957, Feb. 5 4 A

Ap

57. Electrocardiographs Aloe, A. S., Co. 1 9 5 6 , Dec. 2 5 A 42 A

·


58.

Electrodes, Spectro scopic

National Carbon Co., Union Carbide & Carbon Corp. 1 9 5 6 , June 2 7 A ; A u g . 2 9 A ; N o v . 4 7 A ; Dec. 5 1 A 1 9 5 7 , Mar. 2 8 A ; A p r . Part II 31A United Carbon Products Co., Inc. 1 9 5 6 , May 4 6 A ; O c t . 3 2 A 3 3 A ; Dec. 3 5 A 1 9 5 7 , J a n . 1 6 A ; Mar. 1 8 A

59.

Electrometers

Applied Physics Corp. 1 9 5 6 , May 4 2 A ; June A u g . 1 0 A ; Sept. 4 8 A ; 4 4 A , Nov. 6 4 A ; Dec. 1 9 5 7 , Feb. 7 3 A , Mar. Curtiss-Wright Corp. 1 9 5 6 , O c t . 6 0 A , Dec. 1 9 5 7 , Mar. 8 8 A

48A, Oct. 32A 57A 26A

60.

Electronic Instruments & Supplies Allied Radio 1 9 5 6 , Sept. 6 9 A Consolidated Electrodynamics Corp. 1 9 5 7 , Feb. 6 A - 7 A North American Philips Co., Inc. 1 9 5 6 , June 61 A ; Sept. 4 4 A 4 5 A ; O c t . 6 2 A - 6 3 A ; Dec. 67A 1 9 5 7 , A p r . Part II 7 A Perkin-Elmer Corp. 1 9 5 7 , A p r . Part II O B C Photovolt Corp. 1 9 5 7 , A p r . Part II 3 A Research Apparatus, Inc. 1 9 5 6 , Nov. IBC Superior Electric Co. 1 9 5 6 , July 5 3 A

61.

Electrophoresis Ap paratus

A l o e , A . S., Co. 1 9 5 6 , May 5 9 A ; July 65 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Harshaw Scientific, A Div. of Harshaw Chemical Co. 1 9 5 6 , June 6 A ; A u g . 6 A ; Sept. 6 A ; O c t . 6 A ; N o v . 6 A ; Dec. 6 A Kern Co. 1 9 5 7 , A p r . Part II 5 2 A Klett M f g . Co. 1 9 5 6 , May 3 2 A , 6 3 A ; June 3 8 A , 4 2 A ; July 2 2 A , 66A,· A u g . 2 8 A , 5 7 A ; Sept. 7 9 A , 8 7 A ; O c t . 4 5 A , 6 9 A ; Nov. 8 7 A , 8 9 A ; Dec. 2 5 A , 7 1 A 1 9 5 7 , Jan. 2 9 A , 8 5 A ; Feb. 4 8 A , 81 A ; Mar. 3 7 A , 7 3 A ; A p r . Part II 51 A , 5 5 A Laboratory Glass & Instruments Corp. 1956, Oct. 6 7 A 1 9 5 7 , Mar. 1 7 A ; A p r . Part II 41A Perkin-Elmer Corp. 1956, Aug. 3 2 A 1 9 5 7 , A p r . Part II O B C Photovolt Corp. 1 9 5 6 , May 7 7 A , June 4 4 A ; July 3 0 A ; A u g . 3 9 A , Sept. 5 6 A ; O c t . 7 5 A ; Nov. 6 5 A ; Dec. 5 6 A 1 9 5 7 , Jan. 31 A,· Feb. 31 A,· Mar. 2 3 A ; A p r . Part II 3 A Research Equipment Corp. 1 9 5 6 , Sept. 54A,- N o v . 2 6 A Schaar & Co. 1 9 5 6 , Sept. 4 8 A , N o v . 6 0 A 1 9 5 7 , Jan. 4 6 A

Sorvall, Ivan, Inc. 1 9 5 7 , A p r . Part II 4 7 A Spinco Div., Beckman Instru ments, Inc. 1 9 5 6 , July 42A,· A u g . 5 9 A ; N o v . 49A,· Dec. 4 8 A 1 9 5 7 , Jan. 1 0 A Thomas, Arthur H . , Co. 1 9 5 6 , June 3 4 A

62.

Employment

General Electric Co. 1 9 5 6 , June 6 7 A ; O c t . 2 8 A Scientific Instruments Div., Beckman Instruments, Inc. 1 9 5 6 , May 1 5 A , 5 3 A , 62A,· June 5 A ; July 1 5 A , 21 A , 5 5 A / Sept. 1 6 A , 51 A,· O c t . 5 6 A - 5 7 A ; Nov. 2 3 A , 6 1 A 1 9 5 7 , Mar. 3 2 A - 3 3 A Sylvania Electric Products Inc. 1 9 5 6 , Oct. 6 4 A

63. Evaporators Aloe, A. S., Co. 1 9 5 6 , A u g . 6 7 A ; Sept. 2 6 A 1 9 5 7 , Mar. 3 4 A Laboratory Glass & Instruments Corp. 1 9 5 7 , A p r . Part II 4 1 A Machlett, E., & Son 1956, Aug. 2 4 A 1 9 5 7 , Jan. 8 7 A ; Mar. 8 7 A Scientific Glass Apparatus Co., Inc. 1 9 5 6 , May 25 A

64. Extractors Aloe, A. S., Co. 1956, Oct. 4 0 A Laboratory Construction Co. 1 9 5 6 , May 2 3 A ; June 2 1 A 1 9 5 7 , Feb. 5 7 A ; Mar. 68 A ; A p r . Part II 6 9 A Scientific Glass Apparatus Co., Inc. 1 9 5 6 , N o v . 33 A

65.

Filter Bell Jars

New York Laboratory Supply Co., Inc. 1 9 5 6 , O c t . 3 0 A ; Dec. 7 9 A 1 9 5 7 , Mar. 4 1 A

66.

Filters

A c e Glass, Inc. 1 9 5 6 , Sept. 6 6 A 1 9 5 7 , A p r . Part II 1 6 A Farrand Optical Co. 1 9 5 6 , Dec. 3 0 A 1 9 5 7 , Feb. 9 8 A New York Laboratory Supply Co., Inc. 1 9 5 6 , Sept. 77 A Photovolt Corp. 1 9 5 7 , A p r . Part II 3 A U.S. Stoneware 1956, Aug. 5 8 A

67.

Flasks

A c e Glass, Inc. 1 9 5 7 , A p r . Part II 1 6 A Corning Glass Works 1 9 5 6 , June 41 A ; Nov. 1 3 A ; Dec. 7 3 A Doerr Glass Co. 1 9 5 7 , Mar. 6 2 A Thermal American Fused Quartz Co., Inc. 1 9 5 7 , A p r . Part II 2 8 A

68.

Flowmeters

A c e Glass, Inc. 1956, Aug. 26A

Greiner, Emil, Co. 1956, Sept. 5 A 1 9 5 7 , Mar. 3 A

69.

Fluidizers

American A g i l e Corp. 1 9 5 6 , June 4 9 A

70.

Fluorometers

American Instrument Co., Inc. 1 9 5 6 , June 4 6 A ; Dec. 2 7 A Coleman Instruments, Inc. 1 9 5 6 , May 70A,· July 5 2 A ; A u g . 2 3 A ; Sept. 72A,- Nov. 80A 1 9 5 7 , Jan. 7 4 A ; Mar. 2 0 A , 76A Farrand Optical Co., Inc. 1 9 5 6 , June 80A.· July 2 8 A 1957. Jan. 7 0 A , Mar. 6 9 A Jarrell-Ash Co. 1956, O c t . 8 3 A Klett M f g . Co. 1 9 5 6 , May 3 2 A ; June 42A,July 6 6 A ; A u g . 2 8 A ; Sept. 8 7 A , Oct. 6 9 A ; Nov. 8 7 A ; Dec. 2 5 A 1 9 5 7 , Jan. 2 9 A , Feb. 48A,· Mar. 3 7 A ; A p r . Part II 51 A , 55A Photovolt Corp. 1 9 5 6 , May 7 7 A ; July 30A,A u g . 3 9 A , Sept. 5 6 A ; O c t . 7 5 A ; Nov. 6 5 A ; Dec. 5 6 A 1957, Feb. 31 A , Mar. 2 3 A , A p r . Part II 3 A Zeiss, Carl, Inc. 1 9 5 7 , A p r . Part II 2 5 A 71. Fractionators Martin, H . S., & Co. 1 9 5 6 , May IBC 72. Fraction Collectors A l o e , A . S., Co. 1 9 5 7 , Jan. 2 9 A ; Feb. 4 7 A LKB-Produkter Fabriksaktiebolag 1956, Oct. 2 8 A Packard Instrument Co. 1 9 5 6 , June 2 4 A ; O c t . 2 3 A ; Dec. 2 8 A 1 9 5 7 Λ Α Ρ Γ . Part II 4 9 A Research Equipment Corp. 1 9 5 6 , May 5 5 A , Sept. 5 4 A ; Nov. 2 6 A 1 9 5 7 , Jan. 6 8 A ; A p r . Part II 22A Schaar & Co. 1956, May 4 8 A ; Sept. 67A,· Nov. 6 0 A 1 9 5 7 , Jan. 4 6 A Sorvall, Ivan, Inc. 1957, A p r . Part II 4 7 A 73. Fractometers Perkin-Elmer Corp. 1 9 5 6 , May 3 6 A ; June 3 3 A ; July 3 2 A ; Sept. O c t . 3 6 A ; Nov. 5 7 A ; 44A 1957, Jan. 4 8 A , 4 9 A ; 6 4 A ; Mar. 4 9 A ; A p r . OBC 74.

32A, 40A, Dec. Feb. Part II

Freeze D r y i n g Ap paratus A l o e , A . S., Co. 1 9 5 6 , June 4 7 A LaPine, Arthur S., & Co. 1 9 5 6 , Sept. 73 A Machlett, E., & Son 1956, Oct. 5 5 A 1 9 5 7 , Feb. 1 0 5 A ; A p r . Part II 3 2 A

75.

Freezing P o i n t Apparatus Advanced Instruments, Inc. 1957, Jan. 1 8 A , A p r . Part II 28A 76. Funnels A c e Glass, Inc. 1956, Dec. 6 1 A Coors Porcelain Co. 1956, July 6 6 A 1957, Mar. 7 3 A , A p r . Part II 18A Corning Glass Works 1956, Sept. 8 8 A Nalse Co., Inc. 1956, N o v . 1 8 A 1957, A p r . Part II 7 0 A New York Laboratory Supply Co., Inc. 1956, O c t . 3 0 A ; Dec. 7 9 A 1957, Mar. 4 1 A Scientific Products, Oiv. of American Hospital Supply Corp. 1957, A p r . Part II 5 6 A 77. Funnels, Separatory Corning Glass Works 1956, Sept. 8 8 A Fischer & Porter Co. 1956, May 7 9 A Greiner, Emil, Co. 1956, M a y 5 A 1957, Feb. 6 2 A Manostat Corp. 1956, N o v . 37 A 78. Furnaces Burrell Corp. 1956, N o v . 5 2 A Consolidated Electrodynamics Corp. 1957, Feb. 6 A - 7 A Fisher Scientific Co. 1957, A p r . Part II 2 7 A Hevi Duty Electric Co. 1956, June 31 A ; A u g . 31 A ; O c t . 3 5 A ; Dec. 4 3 A 1957, Feb. 63 A Laboratory Equipment Corp. 1956, O c t . 5 8 A ; Dec. 3 4 A 1957, Jan. 71 A ; Feb. 8 0 A Lindberg Engineering Co. 1956, June 6 7 A ; O c t . 6 8 A ; N o v . 8 5 A ; Dec. 6 9 A 1957, Jan. 6 6 A , 8 5 A ; Feb. 4 5 A , 9 9 A ; A p r . Part II 4 3 A Thermo Electric M f g . Co. 1956, May 35 A ; July 31 A ; Sept. 3 9 A 1957, Jan. 4 7 A , Feb. 8 7 A

79.

Gases

A c e Glass, Inc. 1957, A p r . Part II 1 6 A A p p l i e d Research Laboratories 1956, N o v . 4 2 A Consolidated Electrodynamics Corp. 1957, Feb. 6 A - 7 A LaPine, Arthur S., & Co. 1956, Sept. 73 A North American Philips Co., Inc. 1956, June 61 A ; Sept. 4 4 A 4 5 A , O c t . 6 2 A - 6 3 A : Dec. 67A 1957, A p r . Part II 7 A Smith, Arthur F., Co. 1956, O c t . 1 8 A

North American Philips Co., Inc. 1956, June 61 A , Sept. 4 4 A 45 A,· O c t . 6 2 A - 6 3 A ; Dec. 67A 1957, A p r . Part II 7 A 81. Glass T u b i n g Cutters Welch, W . M . , M f g . Co. 1956, May 3 5 A ; A u s . 31 A , Oct. 35A 1957, Feb. 6 3 A 82.

Glass T u b i n g Seal

Cribs Bethlehem Apparatus Co., Inc. 1956, O c t . 1 6 A 1957, Jan. 2 0 A 83.

Glassware & A c c e s sories A c e Glass, Inc. 1956, A u g . 26A,· O c t . 8 0 A 1957, Jan. 4 2 A ; Feb. 2 5 A , A p r . Part II 1 6 A Baker, J. T., Chemical Co. 1956, O c t . 2 6 A - 2 7 A 1957, Feb. 3 5 A - 3 8 A Corning Glass Works 1956, May 6 5 A ; June 2 0 A , 41 A ; July 7 0 A ; A u g . 1 9 A , 6 2 A , Sept. 8 8 A , O c t . 31 A , 5 0 A ; N o v . 1 3 A ; Dec. 4 0 A , 73A 1957, Jan. 6 7 A , Feb. 3 4 A , 8 2 A ; Mar. 7 4 A , A p r . Part II 58A Doerr Glass Co. 1956, June 4 7 A ; A u g . 6 7 A , O c t . 6 5 A ; Dec. 2 4 A 1957, Jan. 6 3 A , Mar. 6 2 A , A p r . Part II 6 1 A Fischer & Porter Co. 1956, June 7 9 A ; July 6 9 A ; Aug. 6 5 A Fisher Scientific Co. 1957, A p r . Part II 2 7 A Kern Laboratory Supply Co. 1957, Feb. 7 8 A , A p r . Part II 30A Kimble Glass Co., Subsidiary of Owens-Illinois 1956, June IBC, O c t . IBC 1957, Feb. IBC Manostat Corp. 1956, N o v . 3 7 A Martin, H . S., & Co. 1956, M a y IBC Metro Industries 1957, A p r . Part II 6 7 A Research Apparatus, Inc. 1956, N o v . IBC Scientific Glass Apparatus Co., Inc. 1957, A p r . Part II 2 3 A Smith, Arthur F., Co. 1957, A p r . Part II 6 2 A 84. Glassware Washers Boekel, W m . , & Co., Inc. 1957, A p r . Part II 2 6 A Chemical Rubber Co. 1956, Sept. 10A,· N o v . 4 8 A 1957, Feb. 1 0 4 A , A p r . Part Il 2 4 A Chicago Apparatus Co. 1956, July 6 7 A Machlett, E., & Son 1956, Dec. 1 2 A 85.

80. Generators Lindberg Engineering Co. 1956, O c t . 12A,· N o v . 7 5 A , Dec. 3 0 A 1957, Mar. 6 9 A

For Laboratory Apparatus you can trust...

Glassworking Equipment Bethlehem Apparatus Co., Inc. 1956, M a y 2 4 A ; July 1 4 A ; A u g . 4 6 A ; Dec. 3 6 A 1 9 5 7 , Feb. 5 5 A ; Mar. 6 4 A

Look fo

LlNDBERG R u g g e d . . . a c c u r a t e . . . dependable These are qualities you can be assured are built into the complete line of laboratory apparatus made by Lindberg. The Lindberg units illustrated here are called "The Royal Family of Laboratory Apparatus." They include : . . . G - 1 0 Laboratory Box Furnace (3000° F. Max.)

. . . B2, B6 Laboratory Box Furnace (2000° F. Max.)

. . . Laboratory Pot Crucible Furnace {2000° F. Max.)

. . . Laboratory Hot Plate ...Volumetric Carbon Determinator . . . "H-F" Combustion Unit . . . Sulfur Determinator . . . Laboratory Furnace Controls . . . Combustion Tube Laboratory Furnace

All these units are sold exclusively through your Laboratory Equipment Dealer. Consult him when you need laboratory apparatus—his advice and assistance will help you make the right selection for your needs. Or, for further information, write us for our Bulletin No. 1001, which describes in detail the complete line of Lindberg Laboratory Apparatus.

LINDBERG

LABORATORY

DIVISION

LINDBERG ENGINEERING COMPANY 2 4 4 0 W e s t H u b b a r d S t r e e t , Chicago 1 2 , Illinois Circle No. 43 A on Readers' Service Card, page 53 A VOL. 29, NO. 4, APRIL 1957

·

43 A

ADVERTISED PRODUCTS GUIDE 86. Goniometers North American Philips Inc. 1 9 5 6 , June 6 0 A

Co.,

87. Grinders Fisher Scientific Co. 1956, Nov. 9 A 1 9 5 7 , A p r . Part II 2 7 A Spex Industries 1 9 5 6 , July 6 2 A 1 9 5 7 , Feb. 1 0 4 A 88. G u n s , Sampling Laboratory Equipment Corp. 1 9 5 6 , July 2 6 A ; A u g . 6 3 A 89. Heaters A c e Glass, Inc. 1 9 5 7 , A p r . Part II 1 6 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Research Specialties Co. 1 9 5 7 , A p r . Part II 4 6 A Thermal American Fused Quartz Co., Inc. 1 9 5 7 , A p r . Part II 2 8 A Thermo Electric M f g . Co. 1 9 5 7 , Mar. 4 7 A Willcens-Anderson Co. 1 9 5 6 , Sept. 4 A 90. H e a t i n g Tapes Briscoe M f g . Co. 1 9 5 6 , Dec. 7 7 A Standard Scientific Supply Corp. 1956, Nov. 1 2 A 91. Homogenize» LaPine, Arthur S., & Co. 1 9 5 6 , Sept. 7 3 A Machlett, E., & Son 1 9 5 6 , May 2 6 A ; July 33 A ; Nov. 1 4 A Sorvall, Ivan, Inc. 1 9 5 7 , A p r . Part II 4 7 A

92.

Hoods

Kewaunee M f g . Co. 1 9 5 6 , June 7 1 A Metalab Equipment Co. 1 9 5 6 , May 5 0 A 1 9 5 7 , Jan. 6 4 A ; Mar. 2 6 A Sheldon, Ε. Η . , Equipment Co. 1 9 5 6 , N o v . 29A,· Dec. 2 1 A 1 9 5 7 , Jan. 5 0 A

93.

Hot Plates

Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Lindberg Engineering Co. 1 9 5 6 , June 67A,- July A u g . 4 8 A ; Sept. 7 7 A 1 9 5 7 , Mar. 17A,· A p r . 43A Research Specialties Co. 1 9 5 7 , A p r . Part II 4 6 A Standard Scientific Supply 1 9 5 7 , Feb. 8 8 A Thermo Electric M f g . Co. 1 9 5 6 , July 31 A ; Sept. Nov. 5 5 A 1 9 5 7 , Feb. 8 7 A Wilkins-Anderson Co. 1 9 5 6 , Sept. 4 A Will Corp. 1956, Oct. 2 9 A 1 9 5 7 , Mar. 7 0 A

65A; Part II

Corp. 39A,·

94. Hydrometers Kimble Glass Co., Subsidiary of Owens-Illinois 1 9 5 6 , A u g . IBC,· Dec. IBC 44 A

·


95. Incubators American Instrument Co., Inc. 1 9 5 6 , June 4 6 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A National Appliance Co. 1 9 5 7 , Jan. 4 3 A ; Mar. 8 8 A 96. Integrators Analytical Instruments, Inc. 1 9 5 7 , A p r . Part II 1 4 A General Electric Co. 1 9 5 6 , Dec. 1 3 A 1 9 5 7 , Jan. 6 A ; Feb. 2 9 A 97. Isotope Charts Harshaw Scientific, A Div. of Harshaw Chemical Co. 1 9 5 6 , July 6 A

98.

Joints

A c e Glass, Inc. 1 9 5 7 , Mar. 8 4 A Rochester Scientific Co. 1 9 5 7 , A p r . Part II 6 8 A Thermal American Fused Quartz Co., Inc. 1 9 5 7 , A p r . Part II 2 8 A 99. Kjeldahl Apparatus Laboratory Construction Co. 1 9 5 6 , May 2 3 A ; June 21 A ; Sept. 14A,· O c t . 1 0 A , N o v . 22A 1 9 5 7 , Feb. 57A,· Mar. 6 8 A ; A p r . Part II 6 9 A 100.

Laboratory Equip ment ( S e e also i n d i v i d u a l items) A c e Glass, Inc. 1 9 5 7 , A p r . Part II 1 6 A American A g i l e Corp. 1 9 5 6 , June 4 9 A ; Sept. 2 2 A ; Nov. 5 1 A 1 9 5 7 , Feb. 4 1 A American Platinum Works 1956, Oct. 6 9 A 1 9 5 7 , Jan. 71 A ; A p r . Part II 12A Baker & Co., Inc. 1 9 5 6 , June 2 5 A ; July 2 9 A ; A u g . 1 2 A ; Sept. 8 5 A , N o v . 50A 1 9 5 7 , A p r . Part II 1 3 A Baker, J. T., Chemical Co. 1956, Oct. 2 6 A - 2 7 A 1 9 5 7 , Feb. 3 5 A - 3 8 A Barnstead Still & Demineralizer Co. 1 9 5 6 , Sept. 2 9 A 1 9 5 7 , Jan. 6 2 A ; Feb. 4 4 A Bishop, J., & Co. Platinum Works 1 9 5 6 , July 2 4 A ; O c t . 6 4 A 1 9 5 7 , Jan. 2 8 A ; A p r . Part II 20A Boekel, Win., & Co., Inc. 1 9 5 7 , A p r . Part II 2 6 A Burrell Corp. 1 9 5 6 , Nov. 5 2 A Central Scientific Co. 1 9 5 6 , May 1 2 A , Sept. 1 8 A 19A Chemical Rubber Co. 1 9 5 6 , Sept. 1 0 A ; N o v . 4 8 A 1957, Feb. 104A,· A p r . Part Il 2 4 A Fisher Scientific Co. 1 9 5 6 , Nov. 6 2 A 1 9 5 7 , A p r . Part II 2 7 A Kern Laboratory Supply Co. 1 9 5 7 , A p r . Part II 3 0 A Kontes Glass Co. 1 9 5 6 , July 2 0 A ; Sept. 6 0 A

Laboratory Equipment Corp. 1 9 5 6 , May 7 6 A ; July 2 6 A , A u g . 63A,· Sept. 6 0 A ; Dec. 6A Lindberg Engineering Co. 1956, J u n e 6 7 A 1 9 5 7 , A p r . Part II 4 3 A Macalaster Bicknell Co. 1 9 5 7 , A p r . Part II 4 5 A New York Laboratory Supply Co., Inc. 1 9 5 6 , O c t . 3 0 A ; Dec. 7 9 A Scientific Glass Apparatus Co., Inc. 1 9 5 7 , A p r . Part II 2 3 A Scientific Products, Div. of American Hospital Supply Corp. 1 9 5 7 , A p r . Part II 5 6 A Smith, Arthur F., Co. 1957, A p r . Part II 6 2 A Sorvall, Ivan, Inc. 1 9 5 7 , A p r . Part II 4 7 A Standard Scientific Supply Corp. 1 9 5 7 , A p r i l Part II 2 1 A Thomas, Arthur H . , Co. 1 9 5 6 , May 38A,- O c t . 38 A , Nov. 5 8 A , Dec. 4 6 A 1 9 5 7 , Jan. 5 8 A , A p r . Part II 34A Wilkens-Anderson Co. 1 9 5 6 , A u g . 4 A ; Sept. 4 A ; Nov. 4 A Will Corp. 1 9 5 7 , A p r . Part II 5 9 A Zeiss, Carl, Inc. 1 9 5 7 , A p r . Part II 2 5 A 101. L a b o r a t o r y Furniture ( S e e also i n d i v i d u a l items) Bethlehem Apparatus Co., Inc. 1956, Oct. 1 6 A 1 9 5 7 , Jan. 2 0 A Chemical Rubber Co. 1 9 5 6 , Sept. 1 0 A ; N o v . 4 8 A 1 9 5 7 , Feb. 1 0 4 A ; A p r . Part II 2 4 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Hallowed Shop Equipment Div., Standard Pressed Steel Co. 1 9 5 6 , July 2 3 A Laboratory Construction Co. 1 9 5 6 , May 23A,· June 2 1 A Metalab Equipment Co. 1 9 5 6 , May 5 0 A , July 4 9 A ; A u g . 4 3 A ; Sept. 5 5 A ; N o v . 69A 1 9 5 7 , Jan. 6 4 A ; Mar. 2 6 A A p r . Part II 6 3 A Scientific Glass Apparatus Co. Inc. 1 9 5 7 , A p r . Part II 2 3 A Sheldon, Ε. Η . , Equipment Co. 1 9 5 6 , N o v . 2 9 A ; Dec. 2 1 A 1 9 5 7 , Jan. 5 0 A 102. L e a k Detectors Consolidated Electrodynamics Corp. 1957, Feb. 6 A - 7 A 103. Manometers Consolidated Electrodynamics Corp. 1956, Oct. 5 9 A 1957, Feb. 6 A - 7 A 104. Manostats Greiner, Emil, Co. 1 9 5 6 , June 3 0 A 1 9 5 7 , Jan. 3 A 105.

M e l t i n g Point A p paratus Parr Instrument Co. 1 9 5 6 , May 63 A ; Dec. 6 9 A

Thomas, Arthur H . , Co. 1 9 5 6 , Dec. 6 4 A 1 9 5 7 , Feb. 9 2 A 106. M e r c u r y Cleaners Bethlehem Apparatus Co., Inc. 1 9 5 6 , June 7 7 A ; Sept. 5 9 A , Nov. 1 8 A 107. M e r c u r y Sweepers Laboratory Equipment Corp. 1 9 5 6 , July 2 6 A 108.

Mercury V a p o r De tectors Kruger, Harold, Instruments 1 9 5 6 , July 6 0 A 109.

Metallographic Equipment Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A 110. M i c r o p r i n t Readers Eastman Kodak Co. 1 9 5 6 , June 3 9 A 111. Microscopes Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A United Scientific Co. 1 9 5 6 , Sept. 2 9 A Zeiss, Carl, Inc. 1 9 5 6 , May 5 0 A ; O c t . 6 1 A 1 9 5 7 , Feb. 5 6 A ; A p r . Part II 25A 112.

M i c r o s c o p e s , Elec tron American Philips Co.,

North Inc. 1 9 5 6 , June 61 A ; Sept. 4 4 A 4 5 A , O c t . 6 2 A - 6 3 A , · Dec. 67A 1 9 5 7 , A p r . Part II 7 A Radio Corporation of America 1 9 5 7 , Feb. 5 0 A ; A p r . Part II 29A 113. Microtomes Sorvall, Ivan, Inc. 1 9 5 7 , A p r . Part II 4 7 A 114. M i l l s , Laboratory Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Thomas, Arthur H . , Co. 1 9 5 7 , Feb. 7 4 A

M i x e r s ( S e e Stirrers & Mixers) 115.

Moisture Deter mination A p p a r a t u s Central Scientific Co. 1 9 5 6 , Sept 1 8 A - 1 9 A 1 9 5 7 , Jan. 3 2 A Consolidated Electrodynamics Corp. 1 9 5 7 , J a n . 2 7 A , · Feb. 6 A - 7 A Dietert, Harry W . , Co. 1956, May 59A,· Sept. 2 4 A 1 9 5 7 , Mar. 8 1 A Sorvall, Ivan, Inc. 1 9 5 7 , A p r . Part II 4 7 A 116. Monochromators A p p l i e d Physics Corp. 1956, Nov. 6 4 A Applied Research Laboratories 1 9 5 6 , July 6 3 A 1 9 5 7 , Jan. 3 9 A Bausch & Lomb Optical Co. 1956, Aug. O B C

Farrand Optical Co., 1956, Aug. 2 0 A Perkin-Elmer Corp. 1956, Aug. 33A; Oct. 3 7 A 1957, A p r . Part II Zeiss, Carl, Inc. 1957, A p r . Part II

117.

Inc. Sept. 4 0 A ; OBC 25A

Mortars & Pestles

Coors Porcelain Co. 1956, Dec. 7 1 A Fisher Scientific Co. 1956, Nov. 9 A

118.

Nephelometers

Coleman Instruments, Inc. 1956, May 7 0 A ; June July 5 2 A ; Sept. 7 2 A ; 11 A ; N o v . 8 0 A 1957, Jan. 7 4 A ; Feb. Mar. 7 6 A Klett M f g . Co. 1956, May 3 2 A , 6 3 A ; 3 8 A , 4 2 A ; July 2 2 A , Aug. 2 8 A , 5 7 A ; Sept. 8 7 A , Oct. 45A, 6 9 A ; 8 7 A , 8 9 A ; Dec. 25 A , 1957, Jan. 2 9 A , 85A,· 4 8 A , 81 A ; Mar. 3 7 A , A p r . Part II 51 A , 5 5 A Wilkens-Anderson Co. 1956, July 4 A

11 A , Oct. 53A, June 66A, 79A, Nov. 71A Feb. 73A;

119. N u c l e a r Instruments ( S e e also R a d i a t i o n M e a s u r ing E q u i p m e n t ) Atomic Instrument Co. 1956, June 4 9 A Baird Associates—Atomic Instrument Co. 1956, Dec. 2 4 A 1957, Mar. 6 9 A Detectolab, Inc. 1956, June 4 7 A , A u g . 6 7 A , Oct. 6 1 A Forro Scientific Co. 1956, N o v . 75 A National Radiac Inc. 1956, July 16A,· A u g . 3 8 A North American Philips Co., Inc. 1956, June 61 A ; Sept. 44 A 4 5 A ; O c t . 6 2 A - 6 3 A ; Dec. 67A 1957, A p r . Part II 7 A Nuclear Instrument & Chemical Corp. 1956, May 3 0 A , July 25 A Nuclear Measurements Corp. 1956, Oct. 1 6 A Packard Instrument Co. 1956, Aug. 18A 1957, Mar. 8 5 A ; A p r . Part II 4 9 A Tracerlab, Inc. 1956, May 52 A ; N o v . 95 A ; Dec. 5 0 A

120.

Oscillographs

American Instrument Co., Inc. 1956, Dec. 2 7 A Consolidated Electrodynamics Corp. 1957, Feb. 6 A - 7 A 121. Ovens A c e Glass, Inc. 1956, July 1 0 A 1957, A p r . Part II 1 6 A American Instrument Co., Inc. 1956, June 4 6 A Blue M Electric Co. 1957, Feb. 4 9 A Boekel, W m . , & Co., Inc. 1957, A p r . Part II 2 6 A

Central Scientific Co. 1956, July 1 8 A ; Sept. 1 8 A 19A 1957, A p r . Part II IFC Despatch Oven Co. 1956, May 5 5 A ; Nov. 8 3 A 1957, Feb. 8 9 A Electric Hotpack Co., Inc. 1956, Nov. 8 8 A 1957, Feb. 1 7 A Fisher Scientific Co. 1956, Dec. IFC 1957, A p r . Part II 2 7 A Harshaw Scientific, A Div. of Harshaw Chemical Co. 1956, June 6 A National Appliance Co. 1956, May 6 0 A ; July 4 6 A ; Sept. 62A.· N o v . 4 0 A New York Laboratory Supply Co., Inc. 1956, July 5 9 A Research Equipment Corp. 1956, Sept. 5 4 A ; N o v . 2 6 A Schaar & Co. 1956, Sept. 48A,· N o v . 6 0 A 1957, Jan. 4 6 A ; Mar. 1 4 A , A p r . Part II 1 0 A Scientific Glass Apparatus Co., Inc. 1957, Mar. 2 5 A Yonkers Laboratory Supply Co. 1957, A p r . Part II 6 5 A

122.

Particle Size Apparatus

MACALASTER BICKNELL CO.

«ROWING .

.

.

.

to meet the demands of

those who desire the best in laboratory

supplies

section of our country supply the educational, medical, and industrial fields

with

over

grown with us

.

.

.

grow, .

as .

others .

have

allow us to

fill your needs.

pH Meters

Cambridge Instrument Co., Inc. 1957, Jan. 7 1 A Chicago Apparatus Co. 1957, A p r . Part II 1 8 A Coleman Instruments, Inc. 1956, May 7 0 A ; July 52 A ; Sept. 7 2 A ; N o v . 2 5 A , 8 0 A 1957, Jan. 7 4 A ; Mar. 7 6 A Fisher Scientific Co. 1957, A p r . Part II 2 7 A Leeds & Northrup Co. 1956, May 1 9 A ; A u g . 3 6 A ; Dec. 1 6 A Photovolt Corp. 1956, May 7 7 A , June 44 A ; July 30A,· A u g . 3 9 A ; Sept. 5 6 A ; Oct. 7 5 A ; Nov. 6 5 A ; Dec. 5 6 A 1957, Jan. 31 A ; Feb. 31 A ; Mar. 2 3 A ; A p r . Part II 3 A Scientific Glass Apparatus Co., Inc. 1957, Jan. 2 1 A , Mar. 2 5 A Scientific Instruments Div., Beckman Instruments, Inc. 1956, Dec. 5 A 1957, Feb. 1 6 A Wilkens-Anderson Co. 1956, Dec. 4 A

125.

items

ress.

123.

124.

15,000

needed for their individual prog-

.

Fisher Scientific Co. 1957, A p r . Part II 2 7 A New York Laboratory Supply Co., Inc. 1956, June 4 2 A

equipment.

Branches throughout the northeast

LaPine, Arthur S., & Co. 1956, Nov. 4 3 A

Petroleum Testing Apparatus

and

Photochemical Reaction Equipment

Hanovia Chemical & M f g . Co. 1956, Sept. 3 8 A ; N o v . 5 4 A 1957, Feb. 2 2 A , A p r . Part II 12A

243 BROADWAY CAMBRIDGE MASSACHUSETTS

181 HENRY ST. NEW HAVEN CONNECTICUT

NEW COURT ST. SYRACUSE NEW YORK

NORTH & DEPOT STS. MILLVILLE NEW JERSEY

Circle No. 45 A on Readers' Service Card, page 53 A VOL. 29, NO. 4, APRIL 1957

·

45 A

ADVERTISED PRODUCTS GUIDE 126.

Photocopyins chines

Scientific Glass Apparatus Co., Inc. 1956, July 2 7 A

Ma-

Eastman Kodak Co. 1 9 5 6 , June 3 9 A

127.

Phototubes (See Tubes, Electron)

Photometers

1.28.

American Instrument Co., Inc. 1956, June 4 6 A ; Dec. 2 7 A Applied Physics Corp. 1 9 5 7 , Jan. 5 7 A Coleman Instruments, Inc. 1956, May 7 0 A , July 11 A , 5 2 A , Sept. 7 2 A ; N o v . 8 0 A 1957, Jan. 7 4 A ; Mar. 7 6 A Fisher Scientific Co. 1 9 5 6 , May 9 A ; A u g . 6 0 A ; Dec. 7 0 A 1 9 5 7 , Jan. 8 0 A , Feb. 9 5 A Klett M f 3 . Co. 1 9 5 6 , May 3 2 A , June, 42 A ; July 6 6 A ; A u g . 2 8 A ; Sept. 8 7 A ; O c t . 6 9 A ; Nov. 8 7 A ; Dec. 2 5 A 1 9 5 7 , Jan. 2 9 A ; Feb. 48 A ; Mar. 7 3 A , A p r . Part II 5 1 A North American Philips Co., Inc. 1 9 5 6 , June 61 A ; Sept. 4 4 A 4 5 A , O c t . 6 2 A - 6 3 A ; Dec. 67A 1 9 5 7 , A p r . Part II 7 A Perkin-Elmer Corp. 1 9 5 6 , June 3 2 A , July 3 2 A 1 9 5 7 , A p r . Part II O B C Phoenix Precision Instrument Co. 1 9 5 6 , June 69A,· O c t . 67 A ; Nov. 9 1 A 1 9 5 7 , Feb. 8 9 A ; Mar. 3 8 A Photovolt Corp. 1 9 5 7 , A p r . Part II 3 A

Pipets & Accessories

Boekel, W m . , & Co., Inc. 1957, A p r . Part II 2 6 A Clay-Adams, Inc. 1 9 5 7 , A p r . Part II 3 2 A Greiner, Emil, Co. 1 9 5 6 , Nov. 5 A Kimble Glass Co., Subsidary of Owens-Illinois 1956, June IBC 1 9 5 7 , Feb. IBC Laboratory Glass & Instruments Corp. 1957, Feb. 7 8 A Machlett, E., & Son 1 9 5 6 , Sept. 3 3 A Manostat Corp. 1956, O c t . 4 7 A Metro Industries 1957, A p r . Part II 6 7 A Nalge Co., Inc. 1957, A p r . Part II 7 0 A Research Equipment Corp. 1956, Sept. 5 4 A ; Nov. 2 6 A Schaar & Co. 1956, Sept. 48A,- Nov. 6 0 A 1 9 5 7 , Jan. 4 6 A Sorvall, Ivan, Inc. 1 9 5 7 , A p r . Part II 4 7 A Thomas, Arthur H . , Co. 1957, Mar. 5 8 A 129. Platinumware American Platinum Works

MULTI-BLOCK HEATER

* 1°C. to

300° C. Liquid Bath SEND FOR FREE CATALOG 2125-C

RESEARCH SPECIALTIES 2005 Hopkins Sf.

Circle No. 46 A on Readers' Service Card, page 53 A 46 A

·


CO.

Berkeley 7, Calif.

Leeds & Northrup Co. 1 9 5 7 , Feb. 9 0 A

136.

132.

Polychromators

Applied Research Laboratories 1 9 5 6 , July 6 3 A 1 9 5 7 , Jan. 3 9 A

Polyethyleneware (See also individual items)

Porcelainware (See also individualjtems)

Coors Porcelain Co. 1 9 5 6 , May 8 0 A ; June 67A,· July 6 6 A ; A u g . 4 7 A ; Sept. 8 3 A ; Oct. 6 1 A , ίΝον. 8 6 Α 1 9 5 7 , Jan. 6 6 A ; Feb. 8 9 A Fisher Scientific Co. 1957, A p r . Part II 2 7 A Kern Laboratory Supply Co. 1957, A p r . Part II 3 0 A Thermal American Fused Quartz Co., Inc. 1956, May 5 2 A , June 1 8 A , Sept. 3 6 A ; Nov. 2 8 A 1 9 5 7 , Feb. 5 8 A , Mar. 2 7 A ; A p r . Part II 2 8 A

135.

Power Supplies

Consolidated Electrodynamics Corp. 1 9 5 7 , Feb. 6 A - 7 A

Presses, Hydraulic

Carver, Fred S., Inc. 1956, May 7 6 A ; June 18 A ; Oct. 82A 1957, Jan. 3 8 A , Feb. 28 A ; A p r . Part II 6 0 A Loomis Engineering & M f g . Co. 1 9 5 6 , May 1 0 A ; June 1 0 A / July 1 2 A ; A u g . 8 A ; Sept. 8A,· Oct. 8 A ; Dec. 1 0 A 1 9 5 7 , Feb. 2 6 A Parr Instrument Co. 1 9 5 7 , Jan. 65 A Pasadena Hydraulics, Inc. 1 9 5 6 , July 6 6 A ; A u g . 5 7 A Wabash Metal Products Co. 1957, Mar. 7 2 A

137.

Pressure Reaction Apparatus

Parr Instrument Co. 1 9 5 6 , July 5 7 A , Sept. 2 0 A 1 9 5 7 , Feb. 9 9 A

138. 131. Polarographs Fisher Scientific Co. 1956, O c t . 7 7 A Sargent, E. H . , & Co. 1956, Oct. 3 9 A 1957, A p r . Part II 3 6 A Southern Instruments Computer Division 1 9 5 6 , July 4 4 A 1 9 5 7 , Jan. 3 6 A

134.

Constant temperature control

ambient

Polari meters

A c e Glass, Inc. 1 9 5 6 , Dec. 6 1 A 1 9 5 7 , A p r . Part 11 1 6 A American Agile Corp. 1956, Sept. 2 2 A , N o v . 5 1 A 1 9 5 7 , Feb. 4 1 A Bel-Art Products 1 9 5 7 , A p r . Part II 1 4 A Metro Industries 1957, A p r . Part II 6 7 A Nalge Co., Inc. 1 9 5 6 , July 1 4 A , Sept. 6 4 A ; Nov. 1 8 A 1957, Jan. 2 0 A , 24A,· Mar. 4 3 A ; A p r . Part II 7 0 Â

Interchangeable heat-transfer blocks mountable on a single heating base: hot plate, tube heater, liquid bath... sold individually or in combination.

from

130.

Fish-Schurman Corp. 1 9 5 6 , Sept. 8 1 A Kern Co. 1957, A p r . Part II 5 2 A Photovolt Corp. 1957, A p r . Part II 3 A Standard Polarimeter Co. 1 9 5 7 , Mar. 2 6 A Zeiss, Carl, Inc. 1956, May 5 0 A , Sept. 5 4 A ; Oct. 6 1 A 1957, Jan. 7 9 A ; Feb. 5 6 A , Mar. 3 7 A ; A p r . Part II 2 5 A

133.

For digestions, extractions, and other reactions requiring close temperature control.

Variable

1956, O c t . 6 9 A 1 9 5 7 , Jan. 71 A , A p r . Part II 12A Baker & Co., Inc. 1 9 5 6 , June 2 5 A , July 2 9 A ; A u g . 1 2 A , Sept. 8 5 A ; Nov. 50Â 1 9 5 7 , A p r . Part II 1 3 A Bishop, J . , & Co. Platinum Works 1956, July 2 4 A , O c t . 6 4 A 1957, Jan. 2 8 A ; A p r . Part II 20A

Protective Devices, Distilled Water

Barnstead Still & Demineralizer Co. 1956, May 6 0 A , Sept. 28 A , 29A 1 9 5 7 , Jan. 6 2 A , 6 3 A , Feb. 4 4 A , 4 5 A ; Mar. 6 2 A , 6 3 A 139. Publications Chemical Rubber Co. 1 9 5 6 , Sept. 1 0 A ; O c t . 7 9 A ; Nov. 4 8 A 1 9 5 7 , Feb. 1 0 4 A ; A p r . Part II24A Ronald Press Co. 1956, Oct. 6 6 A Row, Peterson & Co. 1 9 5 7 , Jan. 3 4 A Sargent, E. H . , * Co. 1 9 5 7 , Mar. 7 2 A Society for Analytical Chem istry 1 9 5 6 , Nov. 9 2 A Thomas, Arthur H . , Co. 1 9 5 6 , Dec. 6 4 A 1 9 5 7 , Feb. 9 2 A

140.

Pumps

A c e Glass, Inc. 1957, A p r . Part II 1 6 A American Instrument Co., Inc. 1 9 5 6 , June 4 6 A Barnstead Still & Demineralizer Co. 1 9 5 6 , May 6 0 A , Sept. 2 8 A 1957, Jan. 6 3 A ; Feb. 4 5 A , Mar. 6 3 A Bel-Art Products 1 9 5 7 , A p r . Part 11 1 4 A Biddle, James G . , Co. 1957, Mar. 2 4 A Eastern Industries, Inc. 1 9 5 6 , June 8 0 A , A u g . 22 A ; O c t . 4 5 A , Dec. 3 3 A 1957, Feb. 81 A , A p r . Part II 20A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Laboratory Equipment Corp. 1 9 5 6 , July 2 6 A Metro Industries 1 9 5 7 , A p r . Part II 6 7 A Sigmamotor, Inc. 1 9 5 6 , June 4 0 A ; O c t . 6 7 A 1957, Feb. 9 9 A ; A p r . Part II 40A Smith, Arthur F., Co. 1956, Oct. 1 8 A

141.

Pumps, Vacuum

Central Scientific Co. 1 9 5 6 , Sept. 1 8 A - 1 9 A ; O c t . 14A 1 9 5 7 , Feb. 4 2 A - 4 3 A Chicago Apparatus Co. 1 9 5 6 , May 5 8 A Consolidated Electrodynamics Corp. 1 9 5 7 , Feb. 6 A - 7 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A LaPine, Arthur S., & Co. 1 9 5 6 , Sept. 7 3 A Wakefield Industries, Inc. 1 9 5 6 , May 8 2 A Welch, W . M . , M f g . Co. 1 9 5 6 , June 6 2 A ; A u g . 5 2 A 1 9 5 7 , Jan. 7 2 A

142.

Purifiers, Gas

Baker & Co., Inc. 1 9 5 7 , A p r . Part II 1 3 A

143.

Pyrometers

Cambridge Instrument Co., Inc.

1956, May 82A 1957, Mar. 41A Thermo Electric Mfg. Co. 1956, July 31 A; Sept. 39A Quantometers (See Spectrographs & A c cessories) Quartzware (See Porcelainware) 144.

Radiation Measuring Equipment

Baird Associates—Atomic Instrument Co. 1 9 5 6 , Dec. 2 4 A Detectolab, Inc. 1 9 5 6 , June 4 7 A ; A u g . 67 A ; Oct. 6 1 A Forro Scientific Co. 1956, Nov. 7 5 A National Radiac Inc. 1 9 5 6 , July 1 6 A ; A u g . 3 8 A Nuclear Instrument «V Chemical Corp. 1956, May 3 0 A , J u l y 2 5 A Nuclear Measurements Corp. 1956, Oct. 1 6 A Packard Instrument Co. 1956, Aug. 1 8 A

145.

Ratemeters

North American Philips Co., Inc. 1 9 5 6 , June 61 A , Sept. 4 4 A 4 5 A , O c t . 6 2 A - 6 3 A ; Dec. 67A 1 9 5 7 , A p r . Part II 7 A

146.

Readers, Direct

Jarrell-Ash Co. 1 9 5 6 , May 4 5 A , Sept. 3 5 A , Nov. 4 5 A

147.

Recorders

A p p l i e d Physics Corp. 1 9 5 7 , Jan. 5 7 A Moseley, F. L , Co. 1 9 5 6 , Sept. 1 0 A Perkin-Elmer Corp. 1 9 5 6 , A u g . 3 3 A , Sept. 4 0 A Scientific Instruments Div. Beckman Instruments, Inc. 1 9 5 7 , Mar. 3 2 A - 3 3 A Varian Associates 1 9 5 6 , M a y 6 4 A , July 3 8 A ; Sept. 6 8 A ; N o v . 1 5 A , 3 8 A 1 9 5 7 , Jan. 6 0 A

Will Corp. 1 9 5 6 , Dec. 2 0 A

148.

LABORATORY

INSTRUMENTS

Reflectance Meters

Photovolt Corp. 1 9 5 7 , A p r . Part II 3 A

149.

Refractometers

American Instrument Co., Inc. 1 9 5 6 , June 4 6 A Bausch & Lomb Optical Co. 1 9 5 6 , June O B C 1 9 5 7 , Feb. O B C Consolidated Electrodynamics Corp. 1 9 5 7 , Feb. 6 A - 7 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Phoenix Precision Instrument Co. 1 9 5 6 , June 4 9 A ; Sept. 2 1 A Scientific Glass Apparatus Co., Inc. 1 9 5 6 , July 2 7 A Zeiss, Carl, Inc. 1 9 5 6 , M a y 5 0 A ; June 6 9 A , O c t . 61 A ; N o v . 85 A 1 9 5 7 , Feb. 5 6 A ; A p r . Part II 25A

150.

Relays, Electronic

LaPine, Arthur S., & Co.

1956, Oct. 42A 151.

(ILLUSTRATED) SS-1 Superspeed Angle Centrifuge. The well-known and timetested "workhorse of the modern laboratory." NOW with the new Sealed Rotor. Speed: up to 16,000 rpm—32,700 X G. The only Sealed Rotor Centrifuge in the Superspeed Range. Capacity: 400 ml.

Safety Charts

• SMALL, MEDIUM, LARGE ANGLE CENTRIFUGES

Mallinckrodt Chemical Works 1 9 5 7 , A p r . Part II 3 9 A

• SUPERSPEED REFRIGERATED CENTRIFUGES

152.

• PORTER-BLUM ULTRA-MICROTOMES

Shakers

Burrell Corp. 1956, May 4 4 A Eberbach Corp. 1 9 5 6 , May 85 A 1 9 5 7 , Jan. 8 4 A Fisher Scientific Co. 1 9 5 7 , Mar. 7 9 A New York Laboratory Supply Co., Inc. 1 9 5 6 , June 4 2 A

Silicaware (See Porcelainware) 153.

Sink Traps & Drains, Polyethylene

American A g i l e Corp. 1 9 5 6 , Sept. 2 2 A ; N o v . 5 1 A 1 9 5 7 , Feb. 4 1 A LaPine, Arthur S., & Co. 1956, Oct. 4 2 A Nalge Co., Inc. 1956, May 24 A

155.

• AUTOMATIC PIPETTES AND INTRODUCING IN THE NEAR FUTURE

THE "SERVALL" FULLY AUTOMATIC SUPERSPEED CENTRIFUGE The unequalled excellence of SERVALL Laboratory Instruments results from our original and continuing development of design, and a thorough familiarity with researchers' requirements since 1930.

Sinks

Laboratory Construction Co. 1 9 5 6 , Sept. 1 4 A , O c t . 1 0 A ; Nov. 2 2 A U. S. Stoneware 1 9 5 6 , M a y 1 8 A , Sept. 7 6 A , Nov. 8 4 A

154.

• HIGH-SPEED OMNI-MIXERS (Homogenizes)

LKB:

in the United States a n d C a n a d a for the

following internationally-famous LKB Instruments: RADIRAC

AUTOMATIC

FRACTION

COLLECTOR

for batch handling of fractions collected in Radii, Circles, or Spirals (time, volume a n d

drop-count

method). Sjbstrand Ultra-Microtome · Electrophoresis Equipment ( p a p e r a n d column) · Chromatography Equipment ( p a p e r a n d composite column) · Moisture Tester · Conductivity Bridge · Polarolyzer · G a s Tester

Spatulas, Magnetic

M a n u f a c t u r e d by:

Laboratory Equipment Corp. 1 9 5 6 , July 2 6 A ; A u g . 6 3 A

156.

Ivan Sorvall, Inc. a r e the sole distributors

LKB-PRODUKTER FABRIKSAKTIEBOLAG P.O. Box 1 2 0 3 5 , Stockholm, S w e d e n

Spectra, Infrared

Sadtler Research Laboratories

WRITE FOR

LITERATURE

1956, Sept. 50A 1 9 5 7 , Feb. 7 2 A 157.

Spectrographs & A c cessories A p p l i e d Physics Corp. 1 9 5 6 , May 42A,· June 48A,·

Ivan

Sorvall,

Inc.

NORWALK, CONNECTICUT Circle No. 47 A on Readers' Service Card, page 53 A

VOL. 29, NO. 4, APRIL 1957

·

47 A

ADVERTISED PRODUCTS GUIDE

Baird Associates—Atomic Instrument Co. 1 9 5 6 , Nov. 3 2 A 1 9 5 7 , Mar. 6 9 A Jarrell-Ash Co. 1 9 5 6 , May 4 5 A ; Sept. 3 5 A ; Nov. 45 A Packard Instrument Co. 1 9 5 6 , Nov. 1 6 A 1957, Feb. 61 A , Mar. 85 A ; A p r . Part II 4 9 A Perkin-Elmer Corp. 1956, Aug. 3 2 A Tracerlab, Inc. 1956, N o v . 9 5 A , Dec. 5 0 A

4 8 A ; Oct. 4 4 A ; Nov. 6 4 A ; Dec. 3 2 A 1 9 5 7 , Jan. 5 7 A ; Feb. 7 3 A ; Mar. 5 7 A Coleman Instruments, Inc. 1 9 5 6 , May 3 4 A , 7 0 A , June 71 A ; July 11 A , 5 2 A ; Sept. 1 5 A , 7 2 A ; Nov. 8 0 A ; Dec. 15A 1 9 5 7 , Jan. 7 4 A , 9 0 A ; Feb. 9 8 A , Mar. 7 6 A ; A p r . Part II 64A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A General Electric Co. 1 9 5 6 , June 6 5 A ; July 61 A ; Dec. 1 3 A 1 9 5 7 , Jan. 6 A ; Feb. 2 9 A ; Mar. 8 A Harshaw Scientific, A Div. of Harshaw Chemical Co. 1956, M a y o A New York Laboratory Supply Co., Inc. 1 9 5 6 , May 81 A , A u g . 6 4 A Perkin-Elmer Corp. 1 9 5 6 , Sept. 4 0 A ; O c t . 3 7 A , Nov. 5 6 A 1 9 5 7 , A p r . Part II O B C Process & Instruments 1 9 5 6 , May 5 8 A ; O c t . 2 8 A ; Dec. 3 4 A Scientific Instruments Div., Beckman Instruments, Inc. 1 9 5 6 , May 53A,· July 15 A,· Oct. 5 6 A - 5 7 A 1 9 5 7 , Mar. 3 2 A - 3 3 A Wilkens-Anderson Co. 1 9 5 7 , Mar. 5 3 A Zeiss, Carl, Inc. 1 9 5 6 , Dec. 3 7 A 1 9 5 7 , A p r . Part II 2 5 A

Arrow Engineering Co., Inc. 1 9 5 6 , May 3 7 A , July 4 6 A ; Oct. 83A Central Scientific Co. 1 9 5 6 , Sept 1 8 A - 1 9 A Eastern industries, Inc. 1 9 5 6 , June 8 0 A ; A u g . 2 2 A ; O c t . 4 5 A ) Dec. 3 3 A 1 9 5 7 , Feb. 8 1 A Eberbach Corp. 1 9 5 6 , O c t . 6 5 A , Nov. 3 0 A Fisher Scientific Co. 1 9 5 7 , Mar. 7 9 A ; A p r . Part II 27A Harshaw Scientific, A Div. of Harshaw Chemical Co. 1 9 5 6 , June 6 A Heller, Gerald K., Co. 1956, Sept. 2 8 A ; O c t . 4 0 A ; Nov. 8 9 A 1 9 5 7 , Jan. 7 9 A , Mar. 3 8 A Mixing Equipment Co., Inc. 1957, Mar. 8 3 A Sorvall, Ivan, Inc. 1957, A p r . Part II 4 7 A Standard Scientific Supply Corp. 1 9 5 7 , Feb. 8 8 A Talboys Instrument Corp. 1 9 5 6 , June 1 4 A Thomas, Arthur H . , Co. 1956, A u g . 5 4 A , Sept. 4 2 A Welch, W . M . , Manufacturing Co. 1 9 5 6 , July 31 A , Nov. 7 8 A 1 9 5 7 , Jan. 4 7 A Wilkens-Anderson Co. 1 9 5 6 , June 4 A Will Corp. 1956, Oct. 2 9 A 1 9 5 7 , Mar. 7 0 A

159.

163.

Corning Glass Works 1956, Oct. 5 0 A Fischer & Porter Co. 1 9 5 6 , Dec. 65 A 1957, Jan. 4 5 A , Feb. 101 A , Mar. 4 5 A Greiner, Emil, Co. 1 9 5 6 , July 5 A Machlett, E., & Son 1 9 5 6 , Sept. 3 3 A

A u g . 1 0 A ; N o v . 6 4 A ; Dec. 32A A p p l i e d Research Laboratories 1 9 5 6 , July 6 3 A , Sept. 8 4 A , Nov. 4 2 A 1 9 5 7 , Jan. 3 9 A ; Mar. 6 5 A Baird Associates—Atomic Instrument Co. 1956, Nov. 3 2 A 1 9 5 7 , Jan. 4 1 A Bausch & Lomb Optical Co. 1956, O c t O B C Jarrell-Ash Co. 1 9 5 6 , May 4 5 A ; Sept. 35 A ; Nov. 4 5 A Laboratory Equipment Corp. 1 9 5 6 , May 7 6 A North American Philips Co., Inc. 1 9 5 6 , June 5 7 A , 5 8 A , 6 0 A , 61 A ; Sept. 4 4 A - 4 5 A ; O c t . 6 2 A - 6 3 A , Dec. 6 7 A 1 9 5 7 , A p r . Part II 7 A

158.

Spectrometers & A c cessories

Spectrometers, Mass

Consolidated Electrodynamics Corp. 1 9 5 6 , May 5 7 A ; June 8 A 1 9 5 7 , Feb. 6 A - 7 A

160.

Spectrometers, N-M-R

Varian Associates 1 9 5 6 , May 2 7 A ; June July IBC/ A u s . 2 5 A ; 31 A ; O c t . 1 7 A ; N o v . Dec. 2 3 A 1957, Jan. 1 2 A , Feb. Mar. 5 0 A

161.

13A; Sept. 66A; 12A,

Spectrophotometer Accessories

A p p l i e d Physics Corp. 1 9 5 6 , June 48 A Baird—Atomic, Inc. 1 9 5 7 , Feb. 7 6 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A General Electric Co. 1 9 5 6 , Dec. 1 3 A 1 9 5 7 , Jan. 6 A ; Feb. 2 9 A Scientific Instruments Div., Beckman Instruments, Inc. 1 9 5 6 , May 5 3 A ; July 1 5 A ; Oct. 5 6 A - 5 7 A Spectra-Bind Associates 1 9 5 7 , A p r . Part II 3 0 A Wilkens-Anderson Co. 1 9 5 7 , Mar. 5 3 A

162.

Spectrophotometers

Applied Physics Corp. 1 9 5 6 , May 4 2 A , June 48 A ; July 1 0 A ; A u g . 1 0 A , Sept. 48 A

·


Spectrophotometers, Infrared Baird-Atomic, Inc. 1 9 5 7 , Feb. 7 6 A Perkin-Elmer Corp. 1 9 5 6 , June 3 2 A ; July 32 A ; Sept. 4 0 A , 41 A ; O c t . 3 6 A , N o v . 5 6 A ; Dec. 4 5 A 1 9 5 7 , Jan. 4 8 A ; Feb. 6 4 A , 6 5 A ; Mar. 48A,· A p r . Part II OBC Scientific Instruments Div., Beckman Instruments, Inc. 1 9 5 6 , May 1 5 A ; June 5 A ; July 21 A ; A u g . 5 A ; Sept. 1 6 A ; Nov. 6 1 A 1 9 5 7 , Jan. 3 5 A ; Feb. 9 3 A , Mar. 3 1 A

164.

Sterilizers

American Instrument Co., Inc. 1 9 5 6 , June 4 6 A Boekel, W m . , * Co., Inc. 1 9 5 7 , A p r . Part II 2 6 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A

165.

Stills

Barnstead Still & Demineralizer Co. 1 9 5 6 , Sept. 2 9 A 1957, Jan. 6 2 A ; Feb. 4 4 A Consolidated Electrodynamics Corp. 1957, Feb. 6 A - 7 A

166.

Stirrers & Mixers

A c e Glass, Inc. 1 9 5 6 , May 7 3 A ; June 2 6 A 1 9 5 7 , A p r . Part II 1 6 A

167.

168.

Stopcocks & Accessories

Temperature Controllers & Indicators

Hallikainen Instruments 1 9 5 6 , May 5 6 A LaPine, Arthur S., & Co. 1957, Jan. 1 4 A , Feb. 1 0 3 A Sargent, E. H . , & Co. 1956, Aug. 3 5 A Thermo Electric Mfg. Co. 1 9 5 6 , July 31 A ; Sept. 3 9 A

169.

Thermometers & A c cessories

Manostat Corp. 1956, Sept 5 8 A

172.

Timers

A c e Glass, Inc. 1 9 5 7 , A p r . Part II 1 6 A North American Philips Co., Inc. 1 9 5 6 , June 61 A : Sept. 4 4 A 4 5 A ; O c t . 6 2 A - 6 3 A , Dec. 67A 1957, A p r . Part II 7 A 173. Titration E q u i p m e n t Central Scientific Co. 1 9 5 6 , Sept. 1 8 A - 1 9 A ; Nov. 20A Coleman Instruments, Inc. 1 9 5 6 , May 7 0 A , July 5 2 A ; Sept. 7 2 A ; Nov. 2 5 A , 8 0 A 1 9 5 7 , Jan. 7 4 A ; Mar. 7 6 A Fisher Scientific Co. 1957, Feb. 7 0 A , A p r . Part II 27A Laboratory Construction Co. 1956, Sept 1 4 A ; O c t . 10 A ; Nov. 2 2 A Laboratory Equipment Corp. 1 9 5 6 , Oct. 5 8 A 1957, Feb. 8 0 A ; Mar. 7 3 A Lindberg Engineering Co. 1 9 5 7 , Feb. 9 9 A Sargent, E. H . , & Co. 1 9 5 6 , June 35 A ; Sept. 43 A,· Dec. 4 7 A 1957, Feb. 7 5 A Wilkens-Anderson Co. 1956, Dec. 4 A 1957, Feb. 6 9 A

174. Transducers, Pressure Aloe, A . S., Co. 1956, Dec. 25 A 175.

Transformers, Variable

Superior Electric Co. 1 9 5 6 , Sept 1 3 A 1 9 5 7 , Jan. 2 5 A

176.

Tubes, Electron

DuMont, Allen B., Laboratories, Inc. 1956, A u g . 11 A , Sept. 3 7 A ; O c t . 2 4 A , 2 5 A ; Nov. 3 5 A ; Dec. 7 5 A 1957, Feb. 1 4 A Radio Corporation of America 1 9 5 6 , June 7 5 A , O c t . 4 6 A 1957, Feb. 2 0 A

177.

Tubes, X-Ray

A c e Glass, Inc. 1 9 5 6 , Nov. 8 2 A Kimble Glass Co., Subsidiary of Owens-Illinois 1 9 5 6 , A u g . IBC; Dec. IBC Parr Instrument Co. 1 9 5 7 , Jan. 6 5 A

North American Philips Co., Inc. 1956, June 6 0 A , 61 A ; Sept. 44A-45A, Oct. 6 2 A - 6 3 A ; Dec. 6 7 A 1957, A p r . Part II 7 A

170.

178.

Thermometers, Differential Advanced Instruments, Inc. 1957, Jan. 1 8 A ; A p r . Part II 28A 171.

Thermometers, Electronic Resistance Greiner, Emil, Co. 1956, O c t . 3 4 A

Tubins, Plastic

Nalge Co., Inc. 1956, May' 5 4 A , July 6 0 A , Sept. 5 0 A ; Nov. 7 7 A 1957, Mar. 6 6 A U. S. Stoneware 1956, May 7 4 A ; Jun e 6 8 A July 5 6 A ; Sept 3 4 A , O c t . 7 8 A ; Nov. 2 4 A ; Dec. 6 8 A 1957, Jan. 7 8 A ; Feb. 96A,· Mur. 8 0 A

m

ackardl

179. Tubing, Rubber Rubber Latex Products, Inc. 1956, May 66A, Sept. 8 2 A ; Nov. 3 6 A 1957, Mar. 8 2 A Wilkens-Anderson Co. 1956, A u g . 4 A 180.

2 Automatic Fraction Collectors 15 Windowless and Flo-Window Counters

Steel

Turbidimeters

Parr Instrument Co. 1957, Jan. 6 5 A

182.

Ultrasonic tus

Appara-

McKenna Laboratories 1 9 5 6 , June 6 9 A

183.

Ultraviolet Light Sources

Hanovia Chemical & M f g . Co. 1 9 5 6 , Sept. 3 8 A ; N o v . 5 4 A 1957, Feb. 2 2 A ; A p r . Part II 12A Research Equipment Corp. 1956, Sept. 5 4 A , N o v . 2 6 A Schaar & Co. 1956, Sept. 4 8 A , N o v . 6 0 A 1957, Jan. 4 6 A

184.

Vacuum Equipment

A c e Glass, Inc. 1956, O c t . 8 0 A Consolidated Electrodynamics Corp. 1 9 5 7 , Feb. 6 A - 7 A Smith, Arthur F., Co.

1956, Oct. 18A 185.

Valves

Consolidated Electrodynamics Corp. 1957, Feb. 6 A - 7 A H o k e , Inc. 1 9 5 6 , Sept. 81 A ; Dec. 3 7 A 1 9 5 7 , Feb. 4 4 A , A p r . Part II 24A Matheson Co. 1 9 5 7 , Mar. 8 6 A Rochester Scientific Co. 1957, A p r . Part II 6 8 A

186.

Valves, Needle

Greiner, Emil, Co. 1956, May 5 A 1957, Feb. 6 2 A Manostat Corp. 1 9 5 6 , May 6 7 A , N o v . 3 7 A

187.

Vapor Pressure A p paratus

Central Scientific Co. 1956, Dec. 1 8 A

188.

D Liquid Scintillation Spectrometers

T u b i n g , Stainless

Bishop, J . , & Co. Platinum Works 1956, July 2 4 A

181.

Instruments

Viscometers & Accessories

Brookfield Engineering Laboratories, Inc. 1956, June 5 3 A ; A u g . 6 9 A 1957, Jan. 5 6 A ; Mar. 5 6 A Fisher Scientific Co. 1957, A p r . Part II 2 7 A Fish-Schurman Corp. 1956, May 8 0 A , O c t . 6 6 A , Nov. 8 5 A 1 9 5 7 , Jan. 6 2 A ; Feb. 8 8 A

D

TRI-CARB LIQUID SCINTILLATION SPECTROMETERS For counting Tritium, Carbon-14 and other beta emitting isotopes. Provides the most simple and convenient method for precise counting of beta samples that go into solution with liquid phosphors. Aqueous samples of various types may also be readily counted. Certain materials that are not soluble in liquid phosphors may be counted in suspensions.

Request

Bulletin 314

AUTOMATIC FRACTION COLLECTORS For precise column chromatography. Provides b o t h t i m e a n d drop counting. Can be furnished for time o p e r a t i o n only at commensurately lower cost. Drops from column fall directly into test tubes. There are no intermediate collecting vessels, glass arms, or funnels to cause mixing, contamination, evaporation, etc. This is important where accurate separations are required or where radioactive tracers are used.

Request Bulletin 230

WINDOWLESS AND FLO-WINDOW COUNTERS Both types can be used for Geiger and proportional operation. Windowless Flow Counter, Model 200A, provides m a x i m u m sensitivity for counting solid samples which emit very soft radiations. Has essentially unlimited life. Physical arrangement of sample in chamber makes it possible to achieve full 2 TÏ geometry. Flo-Window Counter, Model 210, features a very thin metalized window of Du Pont Mylar which offers a minimum of obstruction to low energy radiation. Isolates counting chamber from sample. Eliminates static charge, vapor effects, accidental contamination, etc.

Packard

Request Bulletin 200

Instrument Company

DEPl. " · P. O. B O X 4 2 * · LA G R A N G E , I L L . For furtber information, circle numbers 49 A-1, 49 A-2, 49 A-3 on Readers' Service Card, page 53 A VOL. 29, NO. 4, APRIL 1957 ·

49A


V o l t a g e Regulators

Analytical Instruments, Inc. 1 9 5 7 , A p r . Part II 1 4 A Curtiss-Wright Corp. 1 9 5 6 , Nov. 7 3 A , Dec. 7 2 A 1957, Feb. 1 0 0 A Leeds & Northrup Co. 1 9 5 6 , May 1 9 A , A u g . 3 6 A ; Dec. 1 6 A New York Laboratory Supply Co., Inc. 1956, Nov. 9 1 A 1 9 5 7 , Jan. 6 9 A North American Philips Co., Inc. 1956, June 61 A ; Sept. 4 4 A 45 A ; O c t . 6 2 A - 6 3 A , · Dec. 67A 1 9 5 7 , A p r . Part II 7 A Superior Electric Co. 1 9 5 6 , May 8 3 A , N o v . 1 9 A 190.

W a t e r Current a n d L e v e l Instruments

Gurley, W . & L. E. 1 9 5 6 , June 5 6 A , 1 9 5 7 , Mar. 6 7 A 191.

Oct. 8 1 A

X - R a y Equipment a n d Accessories

A p p l i e d Research Laboratories 1956, July 6 3 A ; Nov. 4 2 A 1 9 5 7 , Jan. 3 9 A North American Philips Co., Inc. 1956, June 5 7 A , 5 8 A , 5 9 A , 6 0 A , 61 A,· Sept. 4 4 A - 4 5 A , O c t . 6 2 A - 6 3 A ; Dec. 6 7 A 1957, A p r . Part II 7 A

Chemicals a n d Materials 192.

Acetic A c i d

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1956, Oct. 1 3 A Baker, J. T., Chemical Co. 1 9 5 6 , May IFC; Sept. IFC 1957, Jan. IFC,· Mar. IFC Du Pont, E. I., de Nemours & Co., Inc. 1957, Jan. 2 3 A , Mar. 35 A 36A

193.

Acetone

Fisher Scientific Co. 1956, July 36A,· Sept. 4 6 A

194.

Acids

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1956, July O B Q Sept O B Q O c t . 13A,· Dec. 7 A 1 9 5 7 , Jan. O B Q Feb. 8 A ; A p r . Part II 8 A Baker, J. T., Chemical Co. 1 9 5 6 , May IFC, July IFC, Sept. IFC,· O c t . 2 6 A - 2 7 A ; Nov. IFC 1 9 5 7 , Jan. IFC; Feb. 3 5 A 3 8 A ; Mar. IFC Du Pont, E. I., de Nemours & Co., Inc. 1 9 5 7 , Jan. 2 3 A Merck & Co., Inc. 1 9 5 6 , May 8 A ; June 37 A ; J u l y 1 3 A ; A u g . 7 0 A ; Sept. 50 A

·


61 A ; O c t . 41 A , Nov. 3 9 A ; Dec. 3 9 A 1957, Jan. 81 A ; Feb. 1 0 8 A ; Mar. 4 6 A 195. Adsorbents Floridin Co. 1 9 5 6 , May 2 8 A ; Sept. 7 8 A 1957, Feb. 8 5 A 196.

Ammonium Hydroxide Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1956, Oct. 1 3 A Baker, J. T., Chemical Co. 1956, May IFC, July IFC; Sept. IFC 1 9 5 7 , Jan. IFC; Feb. 3 5 A 3 8 A ; Mar. IFC Du Pont, E. I., de Nemours & Co., Inc. 1 9 5 7 , Jan. 2 3 A ; Mar. 35 A 36A 197.

Antiozonants

Benzene

Fisher Scientific Co. 1956, July 3 6 A ; Sept. 4 6 A 199.

Biological Chemicals

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1956, July O B C ; Dec. 7 A 1 9 5 7 , Feb. 8 A , A p r . Part II 8A 200.

Boron Fluorides

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1956, Nov. O B C 201. Bromine C o m p o u n d s Michigan Chemical Corp. 1956, May 1 6 A - 1 7 A ; June 22A-23A 1957, Mar. 7 A 202.

Butyl A l c o h o l

Fisher Scientific Co. 1 9 5 6 , July 3 6 A ; Sept. 4 6 A 204.

Calorimetric cals

Chemi-

Parr Instrument Co. 1956, A u g . 5 1 A 205.

Carbon Tetrachloride

Fisher Scientific Co. 1956, July 3 6 A ; Sept. 4 6 A 206.

Chromatographic Papers a n d Chemicals A n g e l , H . Reeve, * Co., Inc. 1 9 5 6 , July 6 4 A 1 9 5 7 , Feb. 5 9 A Eaton-Dikeman Co. 1956, Sept. 7 4 A 1 9 5 7 , Jan. 3 7 A ; Mar. 2 2 A Floridin Co. 1 9 5 6 , May 2 8 A ; Sept. 7 8 A 1 9 5 7 , Feb. 8 5 A Schaar & Co. 1 9 5 6 , Sept. 4 8 A ; Nov. 6 0 A 1957, Jan. 4 6 A Schleicher, Carl, & Schuell Co. 1 9 5 6 , May 2 0 A - 2 1 A ; Sept. 3 2 A , O c t . 1 9 A - 2 2 A ; Dec. 76A 1 9 5 7 , Feb. 2 1 A Will Corp. 1 9 5 6 , Dec. 2 0 A Cupriethylene Diamine Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1 9 5 6 , Sept. O B C 210. Cyclohexane Fisher Scientific Co. 1 9 5 6 , July 3 6 A , Sept. 4 6 A 211. Detergents Alconox, Inc. 1 9 5 6 , May 5 6 A ; Sept. 1 2 A 212. Dimethylformamide Merck & Co., Inc. 1 9 5 6 , May 8 A 1 9 5 7 , Mar. 4 6 A 213. Dioxane Fisher Scientific Co. 1 9 5 6 , July 3 6 A , Sept. 4 6 A 214. Ethyl Acetate Fisher Scientific Co. 1 9 5 6 , July 3 6 A ; Sept. 4 6 A

217. Gases, Compressed Matheson Co., Inc. 1 9 5 6 , May 44 A 1957, Mar. 8 6 A 218. Hexane Fisher Scientific Co. 1956, July 3 6 A ; Sept. 4 6 A Merck & Co., Inc. 1956, June 3 7 A ; July 13 A ; A u g . 7 0 A ; Sept. 61 A ; O c t . 41 A , Nov. 3 9 A ; Dec. 3 9 A 1957, Jan. 81 A ; Feb. 1 0 8 A 219. Hydrochloric A c i d Baker & Adamson Products General Chemical Div. Allied Chemical & Dye Corp. 1956, Oct. 1 3 A Baker, J. T., Chemical Co. 1956, May IFC, Sept. IFC 1957, Jan. IFC; Mar. IFC Du Pont, E. I., de Nemours & Co., Inc. 1957, Jan. 2 3 A ; Mar. 3 5 A 36A 220. Hydrofluoric A c i d Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1957, Jan. O B C 221. H y d r o g e n Peroxide Fisher Scientific Co. 1957, Mar. 5 4 A 222. Indicators Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1 9 5 6 , Dec. 7 A 1 9 5 7 , Feb. 8 A , A p r . Part II 8A Matheson Co., Inc. 1 9 5 6 , June 2 8 A ; Sept. 6 9 A , Nov. 7 7 A ; Dec. 1 4 A 1 9 5 7 , Mar. 1 2 A Smith, G . Frederick, Chemical Co., Inc. 1 9 5 7 , A p r . Part II 6 5 A 223. Isobutyraldehyde a n d Derivatives Eastman Chemical Products, Inc. 1 9 5 7 , Feb. 3 3 A

Buffers

Analytical Measurements, Inc. 1957, Feb. 8 7 A 203.

208.

209.

Eastman Kodak Co. 1 9 5 7 , Feb. 7 9 A 198.

207. Chloroform Fisher Scientific Co. 1 9 5 6 , July 3 6 A ; Sept. 4 6 A

Catalysts

American Platinum Works 1956, Oct. 6 9 A 1 9 5 7 , Jan. 71 A ; A p r . Part II 12A Bishop, J . , & Co. Platinum Works 1956, July 2 4 A ; O c t . 6 4 A 1957, Jan. 2 8 A , A p r . Part II 20A

215. Filter Paper A c e Glass, Inc. 1 9 5 7 , A p r . Part II 1 6 A A n g e l , H . Reeve, & Co., Inc. 1 9 5 6 , June 1 6 A ; July 6 4 A ; Sept. 6 3 A ; Dec. 3 3 A 1 9 5 7 , Feb. 5 9 A Eaton-Dikeman Co. 1 9 5 6 , May 3 7 A ; July 6 2 A ; Nov. 4 8 A 1 9 5 7 , Jan. 3 7 A ; Mar. 2 2 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Schleicher, Carl, & Schuell Co. 1956, May 2 0 A - 2 1 A ; June 71 A ; Sept. 3 2 A ; O c t . 1 9 A 2 2 A ; Nov. 2 7 A , Dec. 7 6 A 1 9 5 7 , Jan. 1 9 A ; Feb. 21 A , Mar. 2 1 A 216. Fluorine Chemicals Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1 9 5 6 , June 73 A ; Sept. O B C ; Nov. O B C 1 9 5 7 , Mar. O B C

224. Isopropyl A l c o h o l Fisher Scientific Co. 1956, July 3 6 A ; Sept. 4 6 A 2 2 5 . Laboratory Chemicals ( S e e also individual items) Baker & Adamson Products General Chemical Div. Allied Chemical & Dye Corp. 1 9 5 6 , May O B C ; June 73 A ; July O B C ; A u g . 21 A ; Sept. OBC,· O c t . 1 3 A , Nov. O B C ; Dec. 7 A 1 9 5 7 , Jan. O B C ; Feb. 8 A ; A p r . Part II 8 A Baker, J. T., Chemical Co. 1956, May IFC; July IFC; Sept. IFC; O c t . 2 6 A - 2 7 A ; Nov. IFC 1 9 5 7 , Jan. IFC; Feb. 3 5 A 3 8 A ; Mar. IFC Chemical Rubber Co. 1 9 5 6 , Sept. 1 0 A ; N o v . 4 8 A 1 9 5 7 , Feb. 1 0 4 A , A p r . Part II24A Chicago Apparatus Co. 1956, N o v . 8 6 A

Du Pont, Ε. I., de Nemours & Co., Inc. 1 9 5 7 , Jan. 2 3 A ; Mar. 3 5 A 36A Ealing Corp.

1956, Oct. 54A Eastman Chemical Products, Inc. 1 9 5 7 , Feb. 3 3 A Fisher Scientific Co. 1 9 5 6 , M a y 4 0 A ; July 3 6 A ; Sept. 4 6 A ; O c t . IFC 1 9 5 7 , Mar. 5 4 A ; A p r . Part II27A Jarrell-Ash Co. 1 9 5 7 , Mar. 8 9 A Laboratory Equipment Corp. 1 9 5 6 , M a y 7 6 A ; July 2 6 A Mallinckrodt Chemical Works 1 9 5 6 , M a y 71 A ; A u g . 5 5 A ; Nov. 8 1 A 1 9 5 7 , Jan. 7 5 A ; A p r . Part II 39A Matheson Co., Inc. 1 9 5 6 , June 2 8 A ; Sept. 6 9 A ; N o v . 77A,· Dec. 1 4 À 1 9 5 7 , Mar. 1 2 A Merck & Co., Inc. 1 9 5 6 , M a y 8 A ; June 37A,J u l y 1 3 A ; A u g . 7 0 A ; Sept. 6 1 A ; O c t . 41 A ; N o v . 3 9 A ; Dec. 3 9 A 1 9 5 7 , Jan. 81 A , Feb. 1 0 8 A ; Mar. 4 6 A ; A p r . Part II 3 3 A Metro Industries 1 9 5 7 , A p r . Part II 6 7 A Parr Instrument Co. 1956, Aug. 5 1 A Scientific Glass Apparatus Co., Inc. 1 9 5 7 , A p r . Part II 2 3 A Smith, G . Frederick, Chemical Co., Inc. 1 9 5 7 , A p r . Part II 6 5 A Standard Scientific Supply Corp. 1 9 5 7 , A p r . Part II 2 1 A Thomas, Arthur H . , Co. 1 9 5 6 , O c t . 3 8 A ; N o v . 58 A ; Dec. 4 6 A 1 9 5 7 , Jan. 5 8 A , A p r . Part II 34A

226.

Lithium Chemicals

Lithium Corp. of America, Inc. 1 9 5 6 , June 2 9 A ; A u g . 2 7 A ; O c t . 71 A,· Dec. 4 1 A 1 9 5 7 , Feb. 2 4 A

227.

Mercuric Chloride

Mallinckrodt Chemical Works 1956, May 7 1 A ; A u g . 5 5 A ; Nov. 8 1 A 1 9 5 7 , Jan. 7 5 A

228.

Mercury

Bethlehem Apparatus Co., Inc. 1 9 5 6 , Sept. 5 9 A

229.

Methyl Acetate

Merck & Co., Inc. 1 9 5 6 , May 8 A 1 9 5 7 , Mar. 4 6 A

233.

Methyl Ethyl Ketone

234.

Nitric Acid

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & D y e Corp. 1 9 5 6 , Sept. O B C ; O c t . 1 3 A Baker, J. T., Chemical Co. 1 9 5 7 , Jan. IFC,· Mar. IFC Du Pont, E. I., de Nemours & Co., Inc. 1 9 5 7 , Jan. 2 3 A ; Mar. 35 A 36A

235.

236.

Methyl Cellosolve

Qlaid. Cell GolotitMetel·

No. 900-3

Noble Metals

American Platinum Works 1956, Oct. 6 9 A 1 9 5 7 , Jan. 71 A , A p r . Part II 12A Bishop, J . , & Co. Platinum Works 1 9 5 6 , July 2 4 A ; O c t . 6 4 A 1 9 5 7 , Jan. 2 8 A ; A p r . Part II 20A

237.

*7Λβ Klett

tyUtoOnustfH

O i l Distillates

Biddle, James G - , Co. 1 9 5 7 , Mar. 2 4 A 238. O r g a n i c Chemicals Baker & Adamson Products General Chemical Div. A l l i e d Chemical & D y e Corp. 1 9 5 6 , Dec. 7 A 1 9 5 7 , Feb. 8 A ; A p r . Part II 8A Chicago Apparatus Co. 1956, Nov. 8 6 A Distillation Products Industries 1956, Nov. 5 3 A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Matheson Co., Inc. 1 9 5 6 , June 2 8 A ; Sept. 6 9 A , N o v . 7 7 A , Dec. 1 4 A 1 9 5 7 , Mar. 1 2 A Metro Industries 1 9 5 7 , A p r . Part II 6 7 A Smith, G . Frederick, Chemical Co., Inc. 1 9 5 7 , A p r . Part II 6 5 A 239. Osmium Tetroxide Merck & Co., Inc. 1956, May 8 A 1 9 5 7 , Mar. 4 6 A

241. P e t r o l e u m Ether Fisher Scientific Co. 1 9 5 6 , July 3 6 A ; Sept. 4 6 A

231.

Photoelectric

Nitroparaffins

232. M e t h y l e n e Chloride Fisher Scientific Co. 1 9 5 6 , July 3 6 A ; Sept. 4 6 A

Methyl Alcohol

Fisher Scientific Co. 1 9 5 6 , July 3 6 A , Sept. 4 6 A

K.leit-£um*H&idxi*i

Commercial Solvents Corp. 1 9 5 6 , June 9 A ; A u g . 9 A ; O c t . 9 A ; Dec. 1 1 A

Merck & C o . , Inc. 1 9 5 6 , June 3 7 A ; July 1 3 A , A u g . 7 0 A ; Sept. 61 A ; O c t . 41 A ; N o v . 3 9 A ; Dec. 3 9 A 1 9 5 7 , Jan. 81 A , Feb. 1 0 8 A

230.

• ••

Photometers

Fisher Scientific Co. 1 9 5 6 , July 3 6 A ; Sept. 4 6 A

240. Perchloric A c i d Baker & Adamson Products General Chemical Div. A l l i e d Chemical & D y e Corp. 1956, Oct. 1 3 A Baker, J. T., Chemical Co. 1 9 5 7 , Jan. IFC; Mar. IFC Merck & Co., Inc. 1 9 5 6 , June 3 7 A ; July 1 3 A , A u g . 7 0 A ; Sept. 6 1 A ; O c t . 41 A ; N o v . 3 9 A , Dec. 3 9 A 1 9 5 7 , Jan. 81 A , Feb. 1 0 8 A Smith, G . Federick, Chemical Co., Inc. 1 9 5 7 , A p r . Part II 6 5 A


Klett

Designed for the rapid and accurate determina tion of thiamin, riboflavin, and other substances which fluoresce in solution. The sensitivity and stability are such t h a t it has been found particularly useful in determining very small amounts of these substances.

.KLETT SCIENTIFIC PRODUCTS, ELECTROPHORESIS APPARATUS · BIO-COLORIMETERS GLASS ABSORPTION CELLS · COLORIMETER NEPHELOMETERS · GLASS STANDARDS · KLETT REAGENTS

Klett

Manufacturing C o .

179 EAST 87TH STREET, NEW YORK, Ν. Υ. Circle Nos. 51 A-1, 51 A-2 on Readers' Service Card, page 53 A VOL. 29, NO. 4, APRIL 1957 ·

51 A


General Chemical Div. A l l i e d Chemical & Dye Corp. 1956, July OBC,· Dec. 7 A 1957, Feb. 8 A , A p r . Part II 8A Packard Instrument Co. 1956, Nov. 1 6 A 1 9 5 7 , Feb. 6 1 A Research Specialties Co. 1956, O c t . 6 8 A , Dec. 7 1 A Tracerlab, Inc. 1956, Aug. 6 6 A 1 9 5 7 , Mar. 8 5 A

Phosphomolybdic Acid

Merck & Co., Inc. 1 9 5 6 , June 3 7 A ; July 1 3 A , A u g . 7 0 A ; Sept. 61 A ; O c t . 41 A ; Nov. 3 9 A ; Dec. 3 9 A 1 9 5 7 , Jan. 81 A ; Feb. 1 0 8 A

243.

Platinum Chemicals

American Platinum Works 1956, Oct. 6 9 A 1 9 5 7 , Jan. 71 A ; A p r . Part II 12A

248. 244.

Potassium Chloride

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1 9 5 6 , July O B C

245.

Potassium Sulfate

Baker, J. T., Chemical Co. 1 9 5 7 , Feb. 3 5 A - 3 8 A

246.

249.

Radioactive Com pounds

Baker & Adamson Products

KERN Precision tnstrumenf

Makers

Reagents, Analytical

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1956, May O B C ; June 73 A ; July O B C ; A u g . 21 A ; Sept. O B C ; O c t . 1 3 A ; Nov. O B C ; Dec. 7 A 1 9 5 7 , Jan. O B C ; Feb. 8 A ; A p r . Part II 8 A Baker, J. T., Chemical Co. 1956, May IFC; July IFC;

Pyrocatechol

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1 9 5 6 , Sept. O B C

247.

Rare Earths

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1 9 5 6 , Dec. 7 A 1 9 5 7 , Feb. 8 A ; A p r . Part II 8A Jarrell-Ash Co. 1 9 5 7 , Mar. 8 9 A

OUTSTANDING PERFORMANCE

since 7 8 7 9

WORLDWIDE ACCEPTANCE

POL A R I M E T E R Full-Circle Scale Trisectional Field V a r i a b l e Penumbral A n g l e Simple, Convenient Tilt

Sept. IFC; O c t . 2 6 A - 2 7 A ; Nov. IFC 1 9 5 7 , Jan. IFC; Feb. 3 5 A 3 8 A ; Mar. IFC Chemical Rubber Co. 1 9 5 6 , Sept. 1 0 A ; N o v . 4 8 A 1 9 5 7 , Feb. 1 0 4 A , A p r . Part II24A Du Pont, E. I., de Nemours & Co., Inc. 1 9 5 7 , Jan. 2 3 A ; Mar. 3 5 A 36A Ealing Corp. 1956, Oct. 5 4 A Fisher Scientific Co. 1 9 5 6 , May 4 0 A ; July 3 6 A ; Sept. 4 6 A ; O c t . IFC 1 9 5 7 , Mar. 5 4 A , A p r . Part II 27A Jarrell-Ash Co. 1 9 5 7 , Mar. 8 9 A Klett M f g . Co. 1 9 5 6 , M a y 3 2 A , 6 3 A , June 3 8 A , 4 2 A ; July 2 2 A , 6 6 A ; A u g . 2 8 A , 5 7 A ; Sept. 7 9 A , 8 7 A ; Oct. 4 5 A , 6 9 A ; Nov. 8 7 A , 8 9 A ; Dec. 2 5 A , 7 1 A 1 9 5 7 , Jan. 2 9 A , 8 5 A ; Feb. 4 8 A , 81 A ; Mar. 3 7 A , 73 A , A p r . Part II 51 A , 5 5 A Mallinckrodt Chemical Works 1 9 5 6 , May 71 A ; A u g . 5 5 A , Nov. 8 1 A 1 9 5 7 , Jan. 7 5 A , A p r . Part II 39A Matheson Co., Inc. 1 9 5 6 , June 2 8 A ; Sept. 6 9 A ; Nov. 7 7 A ; Dec. 1 4 A 1 9 5 7 , Mar. 1 2 A Merck & Co., Inc. 1 9 5 6 , May 8 A , June 37 A ; July 1 3 A ; A u g . 7 0 A ; Sept. 61 A , O c t . 41 A ; Nov. 3 9 A ; Dec. 3 9 A 1 9 5 7 , Jan. 81 A ; Feb. 1 0 8 A ; Mar. 4 6 A Metro Industries 1 9 5 7 , A p r . Part II 6 7 A Smith, G . Frederick, Chemical Co., Inc. 1 9 5 7 , A p r . Part II 6 5 A Standard Scientific Supply Corp. 1 9 5 7 , A p r . Part II 2 1 A Thomas, Arthur H . , Co. 1956, O c t . 3 8 A ; Nov. 58 A ; Dec. 4 6 A 1 9 5 7 , Jan. 5 8 A ; A p r . Part II 34A

Firm, Sturdy Base Direct vernier readings to 0.05° (estimations to 0.01 °)

MICROELECTROPHORESIS APPARATUS KERN L K - 3 0

251.

LIGHT IN WEIGHT C O M P A C T IN SIZE MODERATE I N PRICE . . . y e t this " f r e e " method equipment a f f o r d s a comp/efe a n d accurate picture o f the relative concentra tion o f all the components o f a micro sample in a minimal time.

For further information

and

details, write

·

Sodium Bicarbonate

252. Also capable of diffusion measurements

KERN

COMPANY

7 Beekmcm S t . N e w York 38. Ν. Υ.


S o d i u m Tungstate

255.

Spectrophotometric Solvents

Eastman Kodak Co. 1 9 5 6 , Sept. 4 9 A Smith, G . Frederick, Chemical Co., Inc. 1 9 5 7 , A p r . Part II 6 5 A

256.

Stains

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1 9 5 6 , Dec. 7 A 1 9 5 7 , Feb. 8 A ; A p r . Part II 8A Fisher Scientific Co. 1 9 5 7 , A p r . Part II 2 7 A Matheson Co., Inc. 1 9 5 6 , June 28 A , Sept. 6 9 A , N o v . 7 7 A ; Dec. 1 4 A 1 9 5 7 , Mar. 1 2 A

257.

Sulfuric Acid

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1 9 5 6 , Sept. OBC,· O c t . 1 3 A Baker, J. T., Chemical Co. 1 9 5 6 , May IFC; July IFC, Sept. IFC 1957, Jan. IFC, Mar. IFC Du Pont, E. I., de Nemours & Co., Inc. 1 9 5 7 , Jan. 2 3 A , Mar. 3 5 A 36A

258.

Thioacetamide

Baker * Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1 9 5 6 , Sept. O B C

259.

Toluene

Fisher Scientific Co. 1 9 5 6 , July 3 6 A , Sept. 4 6 A

260.

Trichloroacetic Acid

Merck & Co., Inc. 1 9 5 6 , May 8 A 1 9 5 7 , Mar. 4 6 A

Sodium Hydroxide

Baker & Adamson Products General Chemical Div. A l l i e d Chemical & Dye Corp. 1956, Sept. O B C

253.

254.

Baker, J. T., Chemical Co. 1 9 5 6 , O c t . 2 6 A - 2 7 A , Nov. IFC

Sodium Chloride


Circle Nos. 52 A-1, 52 A-2 on Readers' Service Card, page 53 A 52 A

250.


A l l i e d Chemical & Dye Corp. 1957, Jan. O B C

Sodium Peroxide

Baker & Adamson Products General Chemical Div.

261.

Volumetric Solutions

Ealing Corp. 1956, Oct. 5 4 A

262.

Xylene


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