Sensible Price... Sensitive Performance - American Chemical Society

Sensitive Performance .. .The Model CT Conductivity ... 17302 Daimler Street · Irvine California 92713 · Phone (714) 5404485 · Telex 692 317. CIRCL...
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Sensible Price... Sensitive Performance . . .The Model CT Conductivity Analyzer Sturdy enough for field or plant operation, yet precise enough for laboratory use, this compact analyzer from Trimar measures temperature and temperature-corrected conductivity in fresh or sea water. The Model CT features an LSI circuit design which provides low drift, high accuracy, and low power consumption. Sensor readings are displayed on a large easy-to-read liquid crystal display and the analyzer can be operated on AC or battery. A recorder output signal for each parameter permits interfacing to stripchart recorders, plotters, or other data acquisition devices. If you're into sophisticated water quality measurement, the Trimar Model CT should be your analyzer of choice.

TRIMAR INDUSTRIES, INC. 17302 Daimler Street · Irvine California 92713 · Phone (714) 5 4 0 4 4 8 5 · Telex 692 317 CIRCLE 206 ON READER SERVICE CARD

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Mass Spectral Correlations, Second Edition Newcomers to the field will find this book indispensable. Experts, such as organic mass spectrometrists in the chemical, pharmaceutical, and petrochemical industries, will find it a valuable timesaver in interpreting the spectrum of an unfamiliar compound when information is lacking on the history of the sample.

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This volume is an invaluable resource for interpreting the copious spectral data generated in gas chromatography and mass spectrometry investigations. Comprehensive tables show the most probable assignments for peaks in electron ionization mass spectra of organic compounds.

Fred W. McLafferty, This expanded edition lists more than Editor 3000 structures corresponding to 1500 Cornell University elemental compositions, several times Rengachari the number in the first edition of this book Venkataraghavan, published in 1963. Editor Lederle 124 pages (1982) Clothbound Laboratories US & Canada $24.95 Export $29.95 LC 81-20564 ISBN 0-8412-0702-X Updated and improved edition Order from: of ACS best seller Distribution Office—35 essential for the American Chemical Society interpretation of 1155 Sixteenth St., N.W. unknown mass Washington, D.C. 20036 spectra or CALL TOLL FREE 800-424-6747 and use your credit card.

CIRCLE 100 ON READER SERVICE CARD 1506 A · ANALYTICAL CHEMISTRY, VOL. 54, NO. 14, DECEMBER 1982