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for unattended operation. New guarded differential input circuitry to eliminate noise. New crystal-clock controlled chart speeds. Fast, ^500 millisec ...
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News • 152nd National Meeting of the Electrochemical Society. Oct. 9-14, 1977. Atlanta. Contact: The Electrochemical Society, Inc., P.O. Box 2071, Princeton, N.J. 08540 • 24th Canadian Spectroscopy Symposium. Oct. 23-26, 1977. Conference Centre, Ottawa, Canada. Contact: T. R. Churchill, Canmet, 555 Booth St., Ottawa, Ont., Canada K1A 0G1

Short Courses ACS Courses. For more information, contact: Department of Educational Activities, American Chemical Society, 1155 16th St., N.W., Washington, D.C. 20036. 202-872-4508

Now there's a reliable high performance recorder at a reasonable price... thenewVarian Model 9176 It's a best buy. Varian Model 9176 Strip Chart Recorder gives you the reliability, accuracy, precision and repeatability of recorders that cost much more. Model 9176 is designed to provide exceptional performance with gas and liquid chromatographs and with most other laboratory analysis instruments, including spectrophotometers, densitometers, pH meters, titrators, and EPR and NMR instruments. Choose Your Recorder. Single and dual pen models are offered with a choice of plug-in span and chart speed modules plus many performance options. Result: you can tailor a recorder that provides the best price/performance to meet your exact requirements. Model 9176 Features: New long-writing pens (4,500 linear feet) for unattended operation. New guarded differential input circuitry to eliminate noise. New crystal-clock controlled chart speeds. Fast, sÇ500 millisec full-scale response. And solid-state electronics, lead-screw pen drive, and proven chart drive motor for high reliability. For details circle Reader Service No. 150. To have a Varian representative call you, circle Reader Service No. 151. Varian Instrument Division 611 Hansen Way Box D-070 Palo Alto, CA 94303

Laboratory Automation: Micro-, Mini-, or Midicomputers? Philadelphia (given in conjunction with FACSS Meeting). Nov. 13-14. Raymond E. Dessy and the Chemistry Dept. Instrument Design and Automation Research Group from VPI&SU. $145, ACS members; $170, nonmembers Column Selection in Gas Chromatography Philadelphia (given in conjunction with FACSS meeting). Nov. 13-14. Harold M. McNair and Walter R. Supina. $120, ACS members; $145, nonmembers Automated Analysis Philadelphia (given in conjunction with FACSS Meeting). Nov. 13-14. Hans Veening and Carl Burtis. $145, ACS members; $170, nonmembers Modern Liquid Chromatography Philadelphia (given in conjunction with FACSS Meeting). Nov. 19-21. Lloyd R. Snyder and J. J. Kirkland. $160, ACS members; $195, nonmembers Thin-Layer Chromatography Chicago. Dec. 2-3. Victor Rodwell and Donald McNamara. $145, ACS members; $170, nonmembers Microprocessors and Minicomputers: Interfacing and Applications Blacksburg, Va. Dec. 5-10. Raymond Dessay and the Chemistry Dept. Instrument Design and Automation Research Group from VPI. $355, ACS members; $395, nonmembers

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1066 A · ANALYTICAL CHEMISTRY, VOL. 48, NO. 13, NOVEMBER 1976

G C / M S Data Systems Finnigan Corp. and its subsidiary, INCOS, are presenting a series of free, one-day seminars. Nov. 10, Houston, Tex.; Nov. 12, Denver, Colo.; Nov. 17, Palo Alto, Calif.; Nov. 19, Los Angeles, Calif. Contact: Finnigan Corp., 845 West Maude Ave., Sunnyvale, Calif. 94086 Simplex Optimization i n R e s e a r c h and Development University of Houston, Houston, Tex. J a n . 10-12, 1977. S. N. Deming, S. L. Morgan, and M. R. Willcott. $250. Contact: S. N. Deming, D e p a r t m e n t of Chemistry, University of Houston, Houston, Tex. 77004. 713-749-4809 or 713-749-2612 Waters Associates Regional Liquid Chromatography Schools Chicago, Jan. 17-18; Dallas, J a n . 1 9 20; Los Angeles, Jan. 31-Feb. 1; San Francisco, Feb. 2-3; Cleveland, Feb. 26-27, 1977. $100. Contact: Carole Wade, LC School Registrar, Waters Associates, Inc., Maple St., Milford, Mass. 01757. 617-478-2000

For Your Information Midwest R e s e a r c h Institute is interested in locating experienced and qualified potential collaborators to evaluate methods of sulfate analysis under E P A Contract No. 68-02-1728. T h e methods to be evaluated are: (1) methylthymol blue using the Technicon Autoanalyzer I, (2) methylthymol blue using the Technicon Autoanalyzer II, and (3) barium chloranilate using a manual procedure. Interested parties should contact Fred Bergman, Midwest Research Institute, 425 Volker Boulevard, Kansas City, Mo. 64110 (816-753-7600).

Thompson Packard Products, Inc., announced t h a t it has resumed direct sales responsibilities for its complete line of analytical instrument chart papers, N M R sample tubes, reference standards, and research consumables. In conjunction with this move, the company has prepared a new 84-page catalog detailing the products available. Requests for the new catalog should be directed to Thompson Packard Products, Inc., P.O. Box 910, Boca Raton, Fla. 33432 (305-3913415).