Manufacturers' Literature
Glass Distillation Equipment. Bulletin No. 401, 12 pages, includes vacuum distillation systems, pilot plant equipment, spinning band distillation columns, laboratory-scale molecular stills, glass components, and instruments and accessories for distillation systems. Pope Scientific Inc., 13600 W. Reichert Ave., Monomonee Falls, Wis. 53051 623 Environmental Chambers. Catalog 6900, 48 pages, lists over 100 models that provide controlled temperatures within a range of —225 to 1000 °F and simulate atmospheric conditions at various altitudes. Webber Manufacturing Co., Inc., P.O. Box 217, Indianapolis, Ind. 46206 624
new electronic potentiostats
Instruments for the Physical Sciences. Monochromators, lamp housings, Model SD 3000 spectrodensitometer, and Model M600 photometer are some of the items included in a new general catalog. Schoeffel Instrument Corp., 24 Booker St., Westwood, N. J. 07675 625 Vacuum Instrument. Partial pressure analyzer, Model PPA, is described in a 12-page brochure. The instrument has been designed for use for partial pressure analysis, total pressure measurements, and leak detection. Ultek Division, Perkin-Elmer, Box 10920, Palo Alto, Calif. 94303 626 pH Meters. A 20-page brochure, No. 7147-A, contains complete specifications and extensive descriptive information on 5 new all solid state meters: Zeromatic SS-3, Expandomatie SS-2, Century SS, Electromate, and digital pH meters. Sections also cover the Research Model 72, pocket pH meters, a pH recorder, and an endpoint titrator. Beckman Instruments Inc., 2500 Harbor Blvd., Fullerton, Calif. 92634 627 Silica Gels. A 12-page bulletin, No. 102, S-157, describes the company's 22 grades of silica gel. Fisher Scientific Co., 312 Fisher Blvd., Pittsburgh, Pa. 15219 628
A Hew fine of Wenking Electronic Potentiostats for v a r i o u s electrochemical investigations is now available. Three basic series are offered: a new laboratory model for routine requirements; a new standard series including several "high current" models (to ± 10A); and a new "fast rise" series for shortest rise times and/or high output voltages. Accessory systems, including a high precision voltmeter and motor potentiometers, are also available. For complete up-to-date information on the most widely used Electronic Potentiostats, request our Data File on the new Wenking models.
Company Periodicals Requests for copies of the following publications, catalogs, etc., should be sent directly to the address shown. Business or professional letterheads are requested.
BRINKMANN I N S T R U M E N T S CANTIAGUE ROAD, WESTBURY, N.Y. 11590/ED
4-7500
Aminco Laboratory News, Vol. 25, No. 1. Three instruments for ultramicro Circle No. 107 on Readers' Service Card
VOL. 4 1 , NO. 11, SEPTEMBER 1969
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