NEW PRODUCTS an on-line hydride generator. 4 pp. Leeman Labs 432 Robotics. Brochure describes the use of laboratory robotics in the analysis of biological fluids for drugs and metabolites. Included are data on an HPLC analysis of theophylline and its metabolites in serum. Zymark Corp. 433 UV —vis. Book describes the advantages of diode array technology in U V vis spectroscopy. Included are explanations of how diode array spectrophotometers work and how to get the best results for different applications. 64 pp. Hewlett-Packard 431
Catalogs Gases. Catalog lists gases, gas mixtures, and gas-handling products. Included are product and cylinder specifications and recommended applications. 172 pp. MG Industries 424 UV. Catalog includes miniature and hand lamps, transilluminators, cabi-
nets, radiometers, meters, high-intensity lamps, protective eyewear, power supplies, and ozone generators. 16 pp. UVP 425 Chemicals/chromatography. Catalog features reagents; safety products and programs; high-purity solvents; and products for chromatography, including columns, packings, and TLC plates. 320 pp. J. T. Baker 426 Scientific equipment. Catalog lists more than 50,000 products, including electronic balances, pH/ion meters, chemicals, clean room and chromatography supplies, and vacuum pumps. Sargent-Welch 427 Chromatography. Catalog features products for capillary GC, HPLC, TLC, and paper chromatography. Tables of solvent miscibility and solvent safety data are included. 224 pp. FSA Laboratory Supplies 428 Gases. Catalog features gases for laboratory use, production, and calibration, including oxygen, hydrogen, and helium at 99.9999% purity. Regulators
PROGRAMMING/DIGITAL/ANALOG TEMPUNIT® & TEMPETTE®
and safety equipment are also included. 228 pp. Alphagaz 435 Chromatography. Catalog lists products for environmental and industrial hygiene applications. Included are columns, packings, standards, and products for sample collection, cleanup, and concentration. Supelco 436 Data acquisition. Catalog features data acquisition, industrial control and monitoring, signal conditioning, and communications products for IBM PCXT, PC-AT, PS/2, Apple II, and VME bus computers. MetraByte 437 LC. Catalog includes columns, valves, fittings, filtration and sample preparation products, pumps, detectors, and autosamplers. Also included are products for liquid measurement. 300 pp. Rainin Instrument Co. 438 Radiation sources. Catalog features radiation sources for research, industrial, and environmental applications. Included are gamma, beta particle, and alpha particle standards. Isotope Products Laboratories 439
AT CONSTANT TEMPERATURE
Bath/Circulators THE ORIGINALS AND STILL THE BEST Once you buy a Techne Bath/Circulator, either an original Tempunit or the Tempette, you'll never want to own any other. Reports from our own customers prove that over 98% recommend our circulators to their colleagues. That's why we sell the same customers over and over again and why our customer base is continuously expanding. The reason? In two words: Reliability and Performance. When you receive our catalog, check the specification and price with the leading competition and talk to your colleagues. Then your choice will be 'no choice'. Because the Tempunit and Tempette Bath/Circulators are clearly the best.
TRANSFORM YOUR BATH INTO A PRECISE THERMOSTATIC SYSTEM
Techne
TECHNE, INC./3700 Brunswick Pike, Princeton, NJ 08540/Phone (609) 452-9275/Fax (609) 987-8177/Telex 4971718 CIRCLE 156 ON READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 60, NO. 21, NOVEMBER 1, 1988 · 1251 A
