PIERCE CHEMICAL COMPANY

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Manufacturers' Literature Nitrogen-Phosphorus Detector. Dis­ cusses the advantages of the nitrogenphosphorus flame ionization detector in therapeutic drug monitoring. 4 pp. Hewlett-Packard Co. 430 X-ray Fluorescence. Reports on the use of a newly developed energy-dis­ persive x-ray fluorescence technique for nondestructive chemical analysis of catalysts, pharmaceuticals, and pig­ ments. Ortec Inc. 431 Multichannel Analysis System. De­ scribes the TN-1710 modular multi­ channel analysis system and provides a detailed description of the system's modular, microcomputer-based archi­ tecture, as well as system capabilities and operating features. 16 pp. Tracor Northern, Inc. 432 TOC, TC, TOD Monitoring Equipment. Presents a comprehensive guide for the potential buyer of an on-line TOC, TC, or TOD analyzer. 14 pp. Ionics, Inc. 433 Photomultiplier Tube Scintillation Ap­ plications. Contains information about detector tubes in scintillation applica­ tions, including emission spectra, photopulse shape, and intrinsic energy res­ olution relating to a specific scintillator as well as basic properties, circuits, and considerations of actual applica­ tions. Hamamatsu Corp. 434 Analytical Services. Describes analyti­ cal services available for the monitor­ ing of air, water, and wastewater sam­ ples. 6 pp. Nalco Chemical Co. 435 Reporting Integrators. Describes fea­ tures of three 3380 Series graphic inte­ grators including the power of the built-in microprocessor, automation flexibility to control integration parame­ ters, calculation of analytical results, time programming, and control of auto­ matic samplers. 12 pp. Hewlett-Pack­ ard Co. 436 Ion Lasers. Provides detailed informa­ tion on argon and krypton ion lasers. The lasers operate CW from the ultravi­ olet to far red at output powers as high as 40 W, and they can also be pulsed for very high peak powers. 28 pp. Spectra-Physics 437 Hollow Cathode Lamps. Lists over 60 element lamps for use in atomic ab­ sorption spectrometry. Sadtler Re­ search Laboratories, Inc. 456

Atomic Absorption Spectrophotome­ ter. Details are given on a large number of two-channel analyses performed with the IL 751 AA spectrophotometer. Examples include analysis of water, blood serum, steel, ores, fertilizers, and gunshot residue. 16 pp. Instrumentation Laboratory Inc. 438 High-Temperature Systems. Features standard combustion tube furnaces and design and manufacturing capability for custom heat treating equipment. 4 pp. Thermcraft, Inc. 439 Liquid Chromatography. Two bro­ chures describe the Model 601 liquid chromatograph and the LC-55 spectrophotometric detector. Perkin-Elmer Corp. 440 Digital Thermometers. Complete infor­ mation on full line of digital thermome­ ters, including prices, options, and ac­ cessories. 8 pp. Omega Engineering, Inc. 445 Chromatography Products. Features a new pure air generator for providing zero air for chromatographs as well as evaporators, gas dryers, capillary injec­ tion kits, and graphite ferrules. 12 pp. L. C. Co. 446

Secondary Ion Mass Spectometer. De­ scribes the "plus"-SIMS system of components for addition to existing Auger, ESCA, or other UHV systems to provide surface analysis and depth profiling for both positive and negative secondary ions over a mass range ex­ tending to 1000 amu. 6 pp. Extranuclear Laboratories 441 Analytical Systems. Describes the company's range of analytical systems and fields of applications based on the quadrupole mass spectrometer. Exam­ ples include GC/MS with simultaneous CI/ΕΙ detection, high-sensitivity trace analysis with API, isotope ratio mea­ surements, reactive species studies with modulated beam MS, and surface analysis with SIMS. Extranuclear Labo­ ratories, Inc. 442 Chromatography Newsletter. "The Chromatography Optimizer" informs chromatography users of latest ad­ vances in accessories and supplies for gas and liquid chromatography. Includ­ ed in the first issue are such items as a digital stopwatch for laboratory use, a GC applications library, and a dualflow calibration oven. 4 pp. Varian In­ strument Div. Service Center 443

f 100μΙ REACTIVIAL makes small sample handling EASIER THAN EVER BEFORE!

25 μΙ

50 μΙ

100 μΙ

A C T U A L SIZE F I L L - V O L U M E S T O T A L V I S I B L E F I L L - V O L U M E = 2 0 0 μΙ Made especially f o r trace sample isolation and storage and f o r small volume derivatizations, these new 100 μΙ Reacti-Vials make volumes as small as 10 μ Ι easily manageable.

PIERCE COMPANY

CHEMICAL

Box 117 R o c k f o r d , Illinois 61105 CIRCLE 170 ON READER SERVICE CARD

ANALYTICAL CHEMISTRY, VOL. 49, NO. 11, SEPTEMBER 1977 · 923 A