Cahn Instruments, Inc

Methods” presents a good overview of the variety of data processing tools available. Chapters 10-12 approach the larger problem of information handl...
6 downloads 6 Views 522KB Size
Books Methods" presents a good overview of the variety of data processing tools available. Chapters 10-12 approach the larger problem of information handling— centralized data bases, information services and indexes, and computer networks. There are several deficiencies. In light of my earlier comments, it may not be entirely fair to suggest missing topics, but some demand coverage. Experimental control is nearly ig­ nored; the importance of data do­ mains and conversions, as developed by H. V. Malmstadt, C. G. Enke, and S. R. Crouch, is missing. Coverage of many subjects is replaced by literature references; constant pointing to refer­ ence material, while apparently schol­ arly, is quite distracting in a text. The most glaring problem is the method of publishing; the book is off­ set from typescript, reduced about 40%, and not well bound. The draw­ ings are of variable quality and not re­ produced well. The result is a book which was difficult for this reviewer to read for any length of time. It is un­ likely to be well received as a text, particularly at its price, but will have a place as a reference book.

Books Received A Manual of Chemical and Biological Methods for Seawater Analysis. Timo­ thy Parsons, Yoshiaki Maita, Carol Lalli. xiv + 1 6 4 pp. Pergamon Press, Max­ well House, Fairview Park, Elmsford, N.Y. 10523. 1984. $8.95 NMR of Newly Accessible Nuclei. Vols. 1 and 2. Pierre Laszlo, Ed. xviii + 298 pp. and xx + 436 pp., respectively. Academic Press, 111 Fifth Ave., New York, N.Y. 10003. 1983 and 1984, re­ spectively. $59 and $65, respectively. Topics in Carbon-13 NMR Spectrosco­ py. Vol. 4. George Levy, Ed. xi + 282 pp. John Wiley & Sons, 605 Third Ave., New York, N.Y. 10016. 1984. $57.50 Fundamentals of Air Pollution. 2nd ed. Arthur Stern et al. xviii + 530 pp. Aca­ demic Press, 111 Fifth Ave., New York, N.Y. 10003. 1984. $39.50 Chemistry for Protection of the Envi­ ronment. L. Pawlowski, A. J. Verdier, W. J. Lacy, Eds. xiii + 625 pp. Elsevier Science Publishers, 52 Vanderbilt Ave., New York, N.Y. 10017. 1984. $132.75 Laser Applications in Chemistry. K. L. Kompa, J. Wanner, Eds. ix + 273 pp. Plenum Press, 233 Spring St., New York, N.Y. 10013. 1984. $45

We want you to know why we put a handle on our microbalances.

In the minds of many, the word microbalance con­ jures up images of white gloves, dust-free chambers, and operators with the nerves and patience of a brain surgeon. The Cahn Series 20 Automatic Electrobalances put those images to rest once and for all. They're r u g g e d . Our Series 20 balances are so rugged and compact that we even put a handle on them. You can take them where you need them for microanalysis appli­ cations such as weighing expensive reagents, filters, hazardous materials, radioisotopes... whenever you need to weigh small amounts of material. They're s e n s i t i v e a n d easy t o u s e . With Cahn microbalances, there are no internal weights or special set-up procedures. Push-button operation ensures precise weighing to 01μg— even for inexperienced users. We've b e e n m a k i n g t h e m f o r o v e r 25 years. And many of the first ones we built are still in use today Whijch just goes to show a microbalance doesn't have to be a delicate balance. Contact Cahn for complete information and a dem­ onstration. Our toll-free number is (800) 423-6641.

CAHN Cahn Instruments, Inc., 16207 South Carmenita Road, Cerritos, CA 90701. Phone (213) 926-3378. TWX 910-583-4806.

CIRCLE 42 ON READER SERVICE CARD

ANALYTICAL CHEMISTRY, VOL. 56, NO. 12, OCTOBER 1984 • 1343 A