NEW P R O D U C T S
Manufacturers' Literature Newsletter. Interaction Separations, No. 1, contains articles on separation of basic compounds on a Cis polymer, separation of proteins by hydrophobic interaction chromatography, and UV detection methods in ion chromatography. 8 pp. Interaction Chemicals 423 Electrochemistry. Application note ECD-14 describes the determination of iert-butyl hydroperoxide in acrylic
acid using LC with electrochemical detection. Detection limits, instrumental conditions, and procedures are discussed. EG&G Princeton Applied Research 420 Reference guide. Guide to electronic test and measurement hardware and software includes information on IEEE-programmable instruments; PC software for acquisition, analysis, and control; and radiation measurement instrumentation. 250 pp. Keithley Instruments 421
Accurate calibration standards: two components to 30 or more Get reliable measurements every time with high precision standards from Scott.
Unlimited Choice
From Pure To Parts Per Trillion Scott Sets The Standard
Gas blends and ACUPHASE® liquid mixtures for lab and process calibrations. Guaranteed parts-pertrillion mixes of two components — or 30 - with MICROGRAV™ direct blending. Environmental calibration standards that exceed EPA requirements. And quality equipment designed to handle them. Choose from high and low pressure standard cylinders. Or SCOTTY® disposables from 4 to 221 liters. Scott's ACULIFE® cylinder treatment means guaranteed stability. ACUBLEND® dynamic blending yields absolute cylinder-to-cylinder consistency.
Unmatched Expertise Consult with Scott on your processes and needs. We'll bring 30 + years of know-how to bear on gas choices, equipment needs, even methods and safety procedures. For information or consultation, call our hotline: 1-800-331-4953.
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Specialty Gases Rte 611
Plumsteadville, PA 18949
CIRCLE 146 ON READER SERVICE CARD
748 A · ANALYTICAL CHEMISTRY, VOL. 61, NO. 11, JUNE 1, 1989
Stirrers. Bulletin describes hot plates, stirrers, and stirring hot plates, including ceramic-, porcelain-, and aluminum-top models. Top-plate sizes range from 4" X 4" to 12" X 12". 4 pp. Fisher Scientific 422 Photoacoustics. FT-IR Photoacoustic Literature Survey—Selected Bibliography and Abstracts, 1980-1988 is a compilation of 180 abstracts organized into 12 categories, including instrumentation and data processing, depth profiling, and biosciences. 48 pp. MTEC Photoacoustics 419 Sample handling. Brochure highlights the 231/401 autosampling injector, which performs sample preparation, rinsing, injection, and signalmonitoring procedures. The injector features an open design for fast rack loading and unloading. 8 pp. Gilson Medical Electronics 424 Cryosystems. Brochure describes refrigerator-cooled cryosystems that operate on the Gifford-McMahon principle using a closed helium gas cycle. Technical data charts and system schematics are included. 6 pp. Leybold Vacuum Products 425
Catalogs Chromatography. Catalog features products for GC, HPLC, solid-phase extraction, sample handling, and industrial hygiene. Also listed are reagents and standards. 332 pp. Supelco 426 Laboratory equipment. Catalog includes pH meters, water purification systems, plastic containers, water baths, filtration apparatus, vials, jars, bottles, and flasks. Wheaton 427 Standards. Catalog lists standards for plasma emission spectroscopy, including single-element and multielement standards. Calibration and matrix blanks are also provided. 16 pp. Spex 428 Ovens. Catalog includes gravity-convection, forced-convection, and vacuum ovens and general-purpose and biological-oxygen-demand incubators. Also listed are a variety of accessories. 16 pp. Fisher Scientific 429 Chromatography. Catalog lists vials, caps, seals, crimpers, and decappers for chromatography, headspace analysis, and autosamplers. Information on instrument compatibility is included. 34 pp. Chromacol 430
