Nuclear Measurements Corp

If you precision count a and/or ß activities, using any system ... Telephone: LIBERTY 6-24 5. INDIANAPOLIS 18, INDIANA. International Office: 13 E. 4...
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instruments, photoelectric measuring instruments, rectifier instruments, ra­ diation measuring instruments, and the radiation thickness gauge. Finally, Part IV is concerned with what the author calls "quasi-electronic" instru­ ments and electronic devices used di­ rectly. He includes in the quasi-elec­ tronic group those instruments which contain some of the elements of an elec­ tronic instrument, but which could also be classed by some other term, such as electromagnetic. The book is illus­ trated with diagrams, charts, and pho­ tographs.

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Electroanalytical

Methods.

G. Chariot, Editor, xii + 186 pages. Distributed in the United States and Canada by D. Van Nostrand Co., 257 Fourth Ave., New York 10, Ν. Υ. 1958. $4.95.

This book appeared originally as issue Nos. 1 and 2 of Analytica Chemica Acta, Vol. 18 (1958). It consists of the proceedings of the International Nuclear Measurements Corp. Symposium on Modern Electrochemical 2 4 0 0 N. Arlington Ave. · Telephone: LIBERTY 6-2415 Methods of Analysis, held at Paris in INDIANAPOLIS 18, INDIANA 1957. That meeting was sponsored by IUPAC's Sections of Analytical and International O f f i c e : 13 E. 4 0 t h St., N e w York 16, N.Y. For further information, circle number 54 A-1 on Readers' Service Card, page 97 A Physical Chemistry. Topics discussed include various electrochemical methods in melted salts; chronopotentiometry; a new and better way the use of intensity-potential curves in amperometry and in potentiometry of to stir and heat liquids constant intensity; coulometric deter­ minations; recent developments in polarography such as radiochemical de­ terminations; anodic stripping; current scanning; oscillographic microanalysis; square wave polarography; and high frequency titrations. Papers are in English, French, or German, as re­ ceived from the authors. Each closes with a list of references and minutes of any discussion that took place after its presentation at Paris. The volume includes 124 illustrations and 35 tables. combines a variable magnetic stirrer and a closely controlled hot plate Symposium on Radioisotopes. ASTM so that you now can stir and heat liquids simultaneously Special Technical Publication No. . . . or perform either 215. 94 pages. American Society operation independently. for Testing Materials, 1916 Race St., Ideal for the many stirring, Philadelphia 3, Pa. 1958. $2.20 for dissolving, and mixing operations performed in members; $2.75 for nonmembers. clinical-medical laboratories. Magnetic stirring action The second Pacific Area National lets you stir liquids in closed or vacuum-sealed systems, odd-shaped or narrowMeeting of the American Society for necked vessels, and other non-magnetic flat or curved-bottom containers not usable Testing Materials was held at Los with many ordinary stirring units. Hot plate lets you apply thermostatically con­ trolled heat over a wide range to make this the ideal combination stirring-heating Angeles in September 1956. Here is unit to bring extra time and money savings to your laboratory. Price complete a collection of papers that were pre­ with two stirring magnets and 5' cord with plug, $84.50. Write for new, free sented at the meeting's symposium TEMCO-THERMOLYNE catalog information and name of nearest dealer. sponsored by ASTM Committee E-10 on Radioisotopes and Radiation Ef­ THERMO ELECTRIC MANUFACTURING CO. fects. Nine papers are reproduced, 4 7 8 Huff Street, Dubuque, I o w a plus the discussion which took place

NOW

STIR-PLATE

For further information, circle number 54 A-2 on Readers' Service Card, page 97 A 54 A

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ANALYTICAL CHEMISTRY