detect and continually r e c o r d . . . $*
AMMONIA
concentration down to 0 . 0 0 5 ppm with
the
T E C H N I C O N ®
e\^^^\rialyz:ei- @ Automatically analyzes or monitors for Ammonia in common or complex media A field-proven system ... over 2000 AutoAnalyzers are now auto mating routine wet-chemistry analyses in plants and laboratories throughout the free world . . . analyzing up to 60 repetitive samples per hour and monitoring on-stream continuously. & Detects other trace elements too, e.g.; citric acid, acetyl cholinesterase, starch, benzoic acid, etc. A total of 75 fullyautomated determinations now possible, more are coming.
NEW BOOKS
U. S. Government Publications The following publications are available from the Office of Technical Services, Washington 25, D. C. The Magnetic Properties and Struc ture of Matter. Ya. G. Dorfman. Published in Russia. 364 pages. 1055. Translated into English for Atomic Energy Commission (AECtr-4507) $4,50. Possible methods for solving prob lems of the structure of matter by a study of magnetic phenomena are re viewed. Three groups of substances which were investigated were divided as follows: elementary particles, atoms, and nuclei ; weakly magnetic sub stances; strongly magnetic substances. These studies in\rolved the use of vari ous types of magnetic resonance (nu clear, paramagnetic, diamagnetic, ferroand antiferromagnetic) and the system atic combination of resonance magnetic investigations with magnetostatic in vestigations.
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A Simple Transistorized Beta-Gamma Hand and Shoe Monitor. UCRL 9853. Walker and Roach. 1961. 5 pages. 50 cents. This report describes a radiation de tector for the hands which uses 4 tubes while that for the shoes consists of 2 tubes. The halogen-quenched G-M tubes used as detectors do not require critical high voltage stability or input amplifier requirements.
W H A T IS I T ?
Radioisotope Techniques for Chemi cal, Physical, and Industrial Appli cations. A. J. Cassell. September 1961. 85 pages. ANL-6421. $2.00. . . . the service that keeps pace with the chemists' changing needs! This Sadder I R Spectrum (shown reduced size) is typical of the more than 19,000 indexed by chemical classes, name and molecular formula, and further described by molecular structure and source. Eliminates tedious investigation of unknowns. Compare your spectrum for positive identification! Locate and interpret spectra fast, accurately with special SPEC-FINDER and other indices. Sadtler Spectra are equivalent to thousands of hours compiling your own library. 26 page booklet free.
The
SADTLER
Research Laboratories, Inc.
1517 VINE STREET, PHILADELPHIA 2, PA., LOcust 4 - 0 8 3 5
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Circle No. 94 on Readers' Service Card 68 A
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ANALYTICAL CHEMISTRY
This report tells how to set up a radioisotope laboratory. It also gives detailed instructions for sample prepa ration and half life determination, prep aration of carrier free solutions, diffu sion studies, and other tests in which radioisotopes are used. Training Systems in Radiochemistry and Radioisotope Engineering.
William H. Johnston Laboratories, Inc. April 1961. 34 pages. J LI-6505-2. 50 cents. This report contains several mockup experiments for laboratory studies in radiochemistry and nuclear engineering. Three groups of training systems are de veloped. These are: radio-chemical in strumentation, industrial gaging, and research and process analysis.
