THE COMPLETE POTENTIOSTAT! The new PAR™ Potentiostat/Galvanostat provides more features, modes of operation and flexibility than ever before available.
• ± 1 0 0 V compliance, 1 A max. • Two independent, internal potential sources • High speed electronic potential switching
Balances. A 32-page catalog carries descriptions and photographs of the company's full line of balances, weights, and accessories. New products in cluded are the Dial-O-Gram Series 2000, magnetically damped, general purpose lab balances with dial-vernier readout to 0.1 ^g, and the Model 6010PC, a moisture determination bal ance designed for pollution control. Ohaus Scale Corp., 29 Hanover Rd., Florliam Park, N . J . 07932 601
• Remote electrometer probe (mounted in signal cable) • 10ηΩ input impedance • Slewing rate: lOV/μβ
Fluoride Ion Analyzer. Bulletin 4102, 8 pages, describes the principle of op eration, electronic circuitry, and appli cations of the Model 900F fluoride ion analyzer. The instrument is designed for continuous measurement and con trol of fluorides in potable water and water pollution. Beckman Instru ments, Inc., 2500 Harbor Blvd., Fullerton, Calif. 92634 602
Plug-in modules provide maximum flexibility in readout. Positive feed back IR compensation, high current m e a s u r e m e n t and galvanostatic capabilities up to 1 A are available. The Model 173 replaces a potentiostat, two voltage sources and a current-measuring device. Price of the Model 173 is $2200 including probe. Digital version, $2560. Current readout module, $145. I-E converter, $550. 100 raA output ver sion less than $2000. For more data, contact Princeton Applied Research Corp., Box 565, Princeton, N.J. 08540; telephone (609) 452-2111.
PRINCETON APPLIED RESEARCH CORPORATION Circle No. 150 on Readers' Service Card
COLUMBIA
SCIENTIFIC
INDUSTRIES
STONE-PREMCO INSTRUMENTATION TOTAL THERMAL ANALYSIS DTA -
EGA -
TGA - DSC - Derivative DTA/TGA 26 Basic Models Capabilities:-! 60 C to 1600 C.10 " Torr. to 3 0 0 0 P.S.I.
MANUFACTURERS' LITERATURE
112
Pressure Transducers. A guide for the use of pressure transducers, 32 pages, covers in detail how to establish pres sure transducer specifications, testing pressure transducers, preferred circuits, practical considerations and precau tions, and other information necessary for the successful use of these devices. Computer Instruments Corp., 92 Madi son Ave., Hempstead, Ν. Υ. 11550 603 Optical Components and Accessories.
Catalog C-5, 36 pages, contains com plete specification and price informa tion on optical filters, custom filters, mirrors, and other elcctrooptical and optical products. Baird-Atomic, 125 Middlesex Turnpike, Bedford, Mass. 01730 604
CSI
Stone System
CSI
TGA System
CSI - Premco System
Model 7 0 0 X-Ray Fluorescence Analyzer Elemental Analysis -Calcium to Uranium Detectable Limit Down to—0.01%-1 5 Second Test FOR ADDITIONAL LITERATURE-WRITE OR TELEPHONE COLUMBIA SCIENTIFIC I N D U S T R I E S A S I Division, P. O. Box 6 1 9 0 , Austin, Texas 7 8 7 0 2 512-926-1530 Circle No. 34 on Readers' Service Card
102 A .
ANALYTICAL CHEMISTRY, VOL. 43, NO. 1, JANUARY 1971
Residual Gas Analyzers. An 8-page brochure describes two compact resid ual gas analvzers, the EAI QUAD 1100 and the new QUAD 1110 with built-in oscilloscope. Each system has a mass range from 1 to 300 atomic mass units. Varian, 611 Hansen Wav, Palo Alio, Calif. 94303 605 Liquid Scintillation System. A 4-page bulletin, 7191, provides full specifica tions for the LS-230 liquid scintillation system, giving details of special fea tures, such as the bidirectional sample changer, quench correction method, and readout options. Beckman Instru ments, Inc., 2500 Harbor Blvd., Fullerton, Calif. 92634 606
