meut s. U. S. A. distributors: Standard Scientific Supply Corp., 808 Broadway, New York 3, N. Y.
Southwestern Analytical Chemicals 2 0 9 Pleasant V a l l e y Rd. Austin 2 , Tex.
Manufactures ρ olaro graphic supporting electrolytes and other polarographic special ties, tetrabutylammonium hydroxide for non aqueous titrations, sodium biphenyl reagent for analysis of organics for halogen content, miscellaneous analytical reagents.
Spectra-Bind Associates 1 3 2 3 Carroll St. Brooklyn 1 3 , Ν . Υ .
Manufactures Spectra Binders for filing of IR, UV, NMR, GPC, spectrograms and charts obtained from Baird, Beckman, Cary, Perkin-Elmcr spectrophotometers and Brown, Bristol, L & N, and Ararian strip chart re corders.
Every g Seven Seconds. The entire change of potential is effected during the lifetime of a single mercury d r o p . . . and the entire polarogram is reproduced on the screen once every 7 seconds, cutting analy sis time to a fraction!
Spex Industries, Inc. Martin PI. off E. Second St. Scotch Plains, N . J .
Develops and manufactures spectrograph^ standards for semi-quantitative analysis of almost any material. Manufactures of spec trograph^ accessories, laboratory mixers and grinders; distributor of plates, film, and elec trodes for emission speetrochemical analysis.
The Cathode Ray
Spinco Division Beckman Instruments, Inc. 1 1 1 7 California A v e . Palo A l t o , Calif.
Products include laboratory instruments for molecular separation of materials for purposes of purification, identification, and characterization. Instruments include Model Ε analytical ultracentrifuge, Model L pre parative ultracentrifuge, Model Κ continuous flow centrifuge, Model H electrophoresisdiffusion instrument, Model R paper electro phoresis system—-including the Analytrol, a recording-integrating densitometer, Model CP continuous paper electrophoresis instru ment, and Models LB-1 and LB-2 medical gas analyzers for COa analysis in breath.
POLAROTRACE WITH ELECTRODE STAND Determines SAND
concentrations
TIMES
LOWER
types of polarographic
OVER than
A
THOU
conventional
instruments.
For DIRECT or Derivative Operation · Standard Scientific Supply Corp. 8 0 8 Broadway N e w York 3 , Ν . Υ.
Distributor and manufacturer of a com plete line of laboratory apparatus, chemicals, and reagents. Publisher of manuals of clini cal methods. "Serving Science Since 1888." Member of Labasco. Superior Air Products Co. 132 M a l v e r n St. N e w a r k 5, N . J .
Designs and manufactures equipment for production of gaseous and/or liquid oxygen and nitrogen, as well as storage and transport containers for liquid oxygen, nitrogen, air, helium, and hydrogen in capacities ranging from 2 : /2 liters to 1200 gallons. Designs and fabricates custom cryostats for obtaining ex perimental data at low temperatures. W . A . Taylor & Co. 7 3 0 0 York Rd. Baltimore 4 , M d .
Manufactures colorimetric testing equip ment and reagents for determination of pH, chlorine, phosphate, nitrate, chromate, hard ness, and complete water analysis.
Faster »
More Sensitive · Greater Resolution · Easier to Now available with A N O D I C C O N VERSION UNIT to make possible meas urement of anodic waves. Camera at tachments also available.
Operate · Ruggedly Designed Suitable for research or control operations, this highly versatile instrument opens up a n e w w o r l d of possibilities in polarographic analysis.
Polarotrace is a product of SOUTHERN INSTRUMENTS COMPUTER DIVISION CAMBERLY, SURREY, E N G L A N D
Intro
duced just a short time ago, Polarotrace is n o w standard equipment in many leading institutions. Cat. N o . A - 8 3 7 2 5 — P O L A R O T R A C E , w i t h Electrode
DETAILED I N F O R M A T I O N A V A I L A B L E U P O N REQUEST Our application laboratory is at your disposal to run test specimens.
Stand which includes a thermostatically-controlled tank and built-in gas manifold w i t h stopcocks for simultaneous degassing of three cells, w i t h complete set of glassware and ready for use (115 Volts A . C . )
STANDARD S C I E N T I F I C Supply Corp. 8 0 8 BROADWAY N E W YORK 3, N Y
$4,500.00
LABORATORIES APPARATUS REAGENTS AND CHEMICALS
Circle No. 31 λ on Readers' Service Card VOL 3 1 , NO. 4, APRIL 1959
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