NEWS New Brunswick, N. J., for outstanding con tributions in refractories. George N. Thompson, National Bureau of Standards, Washington, D. C , for service in Committee E-5 on Fire Tests of Materials and Construction. William S. Young, Atlantic Refining Co., for service in establishment of ASTM Com mittees on Absorption Spectroscopy and Mass Spectrometry. William A. Zinzow, Bakélite Co., Bound Brook, N. J., for work in Committees D-9 on Electrical Insulating Materials and D - l l on Plastics.
ANALYST'S CALENDAR Gordon Research Conferences. Analytical Chemistry, New Hampton, Ν. Η., August 8 to 12. Fifth International Colloquium for Spec troscopy. Gmunden, Salzkammergut, Austria, August 30 to September 3. American Chemical Society. 128th Meet ing, Minneapolis, Minn., September 11 to 16. Tenth Instrument-Automation Confer ence. Instrument Society of America, Los Angeles, Calif., September 12 to 16. First International Instrument Congress and Exposition. Philadelphia, Pa., September 13 to 25. Ottawa Symposium on Applied Spectros copy. Ottawa, Canada, September 20 and 21.
Spectrographs Standard Samples of Tool Steels
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A multi-purpose unit with quickly adjusted vertical opening, by handwheel, per mits many different set-ups in minimum time. Used around the w o r l d for RESEARCH, CONTROL, & TESTING. Available accessories include: Heat ing and Cooling Platens; Temp. Con trols; Auxiliary low pressure gauges; Fast air closing; Extruding units; Testing units, etc. Other capacities and sizes available. Write for Bulletin.
LOOMIS ENGINEERING & MANUFACTURING CO. 133 So. 14th St., N e w a r k 7, N . J . Circle No. 18 A on Readers' Service Card, page 29 A 18A
Spectrographs standard samples of high-speed tool steels are now available from the National Bureau of Standards. Six different tool-steel standards, carefully analyzed and certified as to composition, have been added to the list of over 500 standard samples which the bureau distributes to analytical and research laboratories for use in controlling chemical processes and maintaining the accuracy of equipment. Designed for calibrating and checking spectrographic methods of analysis, the new standards are complex alloys of iron, chromium, vanadium, molybdenum, tungsten, and cobalt, together with small amounts of other elements. The tool-steel standards may be obtained from the National Bureau of Standards for $8.00 each. A provisional certificate gives average values of the analyses by the cooperating laboratories. The compositions and sizes of the standards are given in Table I. Table t. Sample No." 436 437 438 439 440 441 " Sizes.
Analytical and Stability Problems in the Food and Pharmaceutical Industries," Charles Rosenblum; and "Automation by Nuclear Radiation in the Food Industry," S. E. Eaton and W. V. Keary.
Instrument-Automation Conference and Exhibit The Tenth Annual Instrument-Auto mation Conference and Exhibit, Sep tember 12 to 16, sponsored by the In strument Society of America, will in clude a display of the latest develop ments in instrumentation and automa tion, as well as clinical and technical sessions. Clinics will include: Main-
Compositions of N B S S p e c t r o g r a p h s Standard Samples of Tool Steels Mn,
%
836 0.21 837 0.48 838 0.20 839 0.18 840 0.15 841 0.27 400 series; rods
Si,
%
Gu,
%
Gr,
%
V,
Mo,
%
%
W,
Co,
%
%
0.63 0.32 6.02 2.80 9.7 0.075 2.8 2.9 0.53 7.82 3.04 1.50 4.9 0.17 0.17 4.66 1.17 8.26 1 .7 5.7 7.8 0.21 0.12 2.72 1.50 4.61 0.14 0.059 2.12 2.11 0.070 13.0 11.8 0.16 0.072 4.20 1.13 0.84 18.5 1 »/»:i-inch diam., 4 inches 1ong. 800 series; rods A-inch diam., 2 inches long.
Applications of Radioactivity in Food A Symposium on Applications of Radioactivity in the Food and Food Processing Industries will be held in Boston, October 19 to 21, the second in a series of symposia on the industrial applications of radioactivity sponsored by Tracerlab. Registration should be made with the Symposium Committee, Technical Division, Tracerlab, Inc., 130 High St., Boston 10, Mass. Papers to be presented include: "Instrumentation for Radioactivity Work," F. H. Low; "Establishing a Radioisotope Laboratory," Edward Shapiro; "Simplified Method for Quan titation of Autoradiography," F. J. Domingues; "Tracer Solutions to
tenance clinic, 35 sessions in 5 days; Analytical Clinic; and Computer Clinic, 6 sessions. Plans are being completed for erecting an annex to the Shrine Exposition Hall in Los Angeles, to meet the demand for space.
NEW BOOKS Reference Tables for Thermocouples.
National Bureau of Standards. Circ. 561, issued April 27, 1955. 84 pages, 22 tables. 50 cents. Government Printing Office, Washington 25, D. C. Superseding Circular 508, this volume gives expanded reference tables for platinum-platinum-10% rhodium, platinum-platinum-13% rhodium, Chromel-Alumel, iron-constantan (modified 1913), copper-constantan, and ANALYTICAL
CHEMISTRY
NEW BOOKS
Chromel-constantan thermocouples with temperature in degrees Celsius (centigrade) and Fahrenheit and elec tromotive force in millivolts as the argu ments. The tables are based upon the absolute electrical units and the inter national temperature scale of 1948. Semimicro
Qualitative
Analysis.
Frank J. Welcher and Richard B. Hahn. vii + 497 pages. D. Van Nostrand Co., Inc., 250 Fourth Ave., New York 3, Ν. Υ., 1955. $6.50. Reviewed by HAHVEY DIEHL, Iowa
State College, Ames, Iowa. Thisfinetext has a good blend of theory, descriptive material, and practice. Part I, theoretical material, 192 pages, is well organized, lucidly written, and modern in approach. Chapter 13 on complex ions is particularly well done. Each chapter ends with sections on worked problems, questions, and prob lems. The problems are well chosen, their number is unusually large, and answers are given. Part II, 117 pages, entitled "Ref erence," has extensive tables of physical data, a discussion of mathematical oper ations, and data on properties of metals and ions. The latter information is presented in tabular form, making for rapid reading and easy comprehension. Part I I I , 150 pages, experimental, carries an introduction to laboratory work and a working direction for sepa rating and identifying cations and anions. Extensive use is made of tables and charts. The general impression that the Wel cher and Hahn text makes is that it con tains an unusually large amount of descriptive chemistry. I t is far short of the paragon in this respect, the McAlpine-Soule version of Prescott and Johnson now so badly in need of re vision, but has far more than the mine run of texts on qualitative analysis. As almost inevitable with a new book, a reviewer can find some specific criti cisms. The oxygen molecule, being paramagnetic, can hardly have the simple double bond character ascribed to it on page 13. The remarkable hy drogen bonding present in the molecule of nickel dimethylglyoxime is ignored on page 169. The structure of the cupric tartrate ion is now known to be differ ent from that pictured on page 176. The authors use the term "supernate" consistently throughout. The reviewer at first viewed this with alarm, but later decided that supernate might well prove to be an acceptable com panion to filtrate, eluate, and distillate. The publishers have done well with t i e composition, and paper and binding appear adequate. Welcher and Hahn may have set the standard for qualita tive texts for the next decade or two.
N-M-R Solves Chemical Puzzles . . . No instrument offers greater advantages for advanced study of chemical systems than Varian's V-4300B High Resolution n-m-r (nuclear magnetic resonance) Spectrometer. This "nuclear detective" is now being used by scientists in many well known universities and research centers for determin ing molecular structures, analyzing functional groups and monitoring chemical reactions. In all these applications it provides non-destructive observation of undisturbed chemical systems, requires a minimum of sample preparation time. Here are some advanced features of the V-4300B High Resolution n-m-r • • •
Spectrometer:
Exclusive Varian sample spinner permits fine separation of closely spaced resonances. Complete Varian magnet system available to provide unsurpassed field stability a n d homogeneity. New console mounting puts a l l controls within easy reach of operator. ^
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A L T O
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associates 4,
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