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PRODUCTS College Chemistry Consultants. Written to provide academic institutions and other organizations with access to expert advice on scientific and educational issues, this booklet d e s c r i b e s C 3 S , t h e ACS College Chemistry Consultants Service. An application for consulting services is included. 426
SFE/50M, a multiple-vessel supercritical fluid extraction system, can perform serial or parallel extractions in addition to static and dynamic extractions. Pressure, density, temperature, and flow can be programmed. Suprex 424
Chemists in the Classroom. This booklet c o n t a i n s s u g g e s t i o n s for chemists who visit an elementary or middle school classroom as visiting scientists. Advance planning, safety considerations, and follow-up activities are described. 7 pp. 427
Manufacturers' Literature Intern program—information for employers. Employers looking for summer help can participate in the 1992 Summer Intern Program sponsored by the ACS Division of Analytical Chemistry. Brochure describes the program and contains a Sponsor Application Form on which available positions can be listed. 425
Chromatography. Brochure highlights the capabilities of the 715 HPLC system controller software for gradient system control and d a t a analysis. 4 pp. Gilson Medical Electronics 428 T e m p e r a t u r e c o n t r o l . Brochure outlines how temperature-controlled systems are designed, engineered,
and manufactured. Systems described include ovens, environmental chambers, and thermal shock and environmental stress screening systems. 9 pp. Blue M Electric 429 GC/MS. Application note describes the analysis of air samples containing ppb levels of CFCs using the HP MS engine mass spectrometer with cryogenic trapping, subambient gas chromatograph, oven control, and m i c r o p a c k e d GC c o l u m n . 6 p p . Hewlett-Packard 430
Catalogs E l e c t r o d e s . Catalog features 48 types of pH and oxidation-reduction p o t e n t i a l electrodes and 27 types of ion-selective electrodes. A detailed selection guide for specific applications is included. pHoenix Electrode 431 Laboratory products. Catalog lists high-performance laboratory products, including labware, tubing, fitting and valves, and environmental sampling products. 57 pp. Norton 432
Absolute Macromolecular Analysis In Minutes! Our DAWN® laser light scattering instruments can tell you more about your macromolecules in a few minutes than any other analytical technique. A lot more! By coupling a DAWN to your existing GPC line, you'll be determining absolute molecular weights, sizes and distributions without having to resort to universal column calibrations, assumptions, or "fudge-factors." And if that isn't enough, you'll be able to predict physical properties such as flex life, brittleness and tear strength. Whether you're using the DAWN instruments for GPC, or off-line for static measurements, our ASTRA and AURORA software make absolute macromolecular characterizations for molecules from a few-thousand to tens-of-millions of Daltons in just minutes! At Wyatt Technology, we've been producing state-of-the-art instruments for over seven years. And we back those products with service, training, seminars and consulting. Jump light-years ahead of the competition; CORPORATION call us at (805) 963-5904. It won't take us long to 802 E. Cota St · Santa Barbara, CA 93103 show you just how much you've been missing! Tel: (805) 963-5904 · Fax: (805) 965-4898
Wyatt Technology
© 1990 Wyatt Technology Corporation
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ANALYTICAL CHEMISTRY, VOL. 63, NO. 21, NOVEMBER 1, 1991 · 1045 A
