Computer products. Brochure describes data acquisition hardware, software, and accessories for IBM PC-XT, PC-AT, PS/2, and Macintosh computers. Specifications are given on plug-in data acquisition boards for analog, digital, and timing input/output functions. National Instruments 421 Surface science. Surface /Interface Bulletin, which provides information on instruments and materials for surface and interface analysis, includes an article on adding Auger electron spectroscopy to SEMs. Surface/Interface 422
Catalogs Chromatography. Catalog lists products for GC, HPLC, TLC, ion chromatography, biochromatography, and sample handling. A variety of chromatograms are included. Alltech 424 Software. Catalog features software for Macintosh computers, including packages for statistics, mathematics, modeling, and 3D graphics. Also described are color monitors and printers. D2 Software 431 Evaporators. Catalog includes standard, digital, micro, and pilot plant rotary evaporators. An evaporator selection guide provides general information and highlights specific features for each of the products discussed. Buchler Instruments 426 Analytical standards. Catalog features kits that contain 14-15 individual standards within a chemical series. Alcohols, phenols, amines, hydrocarbons,
ketones, aldehydes, and pesticides are included. 14 pp. PolyScience 430 Instrumentation. Catalog includes thermometers; pH, mV, temperature, and conductivity meters; water quality analyzers; electrodes; multimeters; recorders; and timers. Extech Instruments 428 Safety. Catalog features products for personal and respiratory protection, chemical storage, regulatory compliance, electrical safety, liquid/solid sampling, and asbestos control. 600 pp. Lab Safety Supply Co. 433 Immunology. Catalog lists more than 300 monoclonal and affinity-isolated polyclonal antibodies. Included are a variety of enzyme, fluorochrome, biotin, and agarose conjugates. Caltag Laboratories 429 Scientific products. Catalog includes balances, beakers, bottles, calculators, centrifuges, chromatography and electrophoresis supplies, containers, pipettors, racks, timers, and vials. PGC Scientifics 432 Laboratory equipment. Catalog lists mixers, stirrers, and heaters, including constant-run and touch-activated mixers, magnetic stirrers, hot plates, extraction heaters, and heating mantles. 16 pp. Lab-Line Instruments 425 Computer products. Catalog includes instrumentation; communication interfaces; software; and frame grabber, image processing, and computer vision products for IBM PC-XT, PC-AT, PS/2, and Apple Macintosh computers. 304 pp. MetraByte 427
Polymers in Aqueous Media Performance Through Association
T
his volume brings researchers up to date on a special class of polymers, those that are water soluble. Aqueous gels of varying chemical types are analyzed with respect to their properties in numerous applications. Polyelectrolyte synthesis and fundamental aspects of elongational viscosities are also discussed. Individual chapters present discussions on topics as diverse as the structure, swelling, polarity effects, stability, and diffusion of synthetic and biopolymers: spectroscopic studies; and associative thickeners as models with commercial potential. The structures of these diverse gels are addressed through complex rheological analysis, light scattering, and novel NMR approaches. Twenty-eight chapters are divided into six sections covering • water-swellable polymers • polarity effects and polymer stability • spectroscopy • model associative thickeners • associative thickeners with commercial potential • commercially related associative thickeners This timely volume, written by leaders in the field, will be of interest to industrial and academic researchers in the area of water soluble polymers and aqueous gels. J. Edward Glass, Editor, North Dakota State University Developed from a symposium sponsored by the Division of Polymeric Materials: Science and Engineering of the American Chemical Society Advances in Chemistry Series No. 223 361 pages (1989) Clothbound ISBN 0-8412-1548-0 LC 89-15136 US & Canada $99.95 Export $119.95 American Chemical Society Distribution Office, Dept. 47 1155 Sixteenth St., N.W. Washington, DC 20036 or CALL TOLL FREE
DIP-370 automatic digital polarimeter features microprocessor control, built-in printer, and multiwavelength capabilities. Optical rotations of 0.0005° can be measured. Jasco 402
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ANALYTICAL CHEMISTRY, VOL. 6 1 , NO. 24, DECEMBER 15, 1989 · 1387 A
