NEWS National Research Council, 2101 Constitution Ave., Washington, D. C. 20418. Page 45 A, Dec. July 7 to 8—Conference on Spectroscopy and Automation. University of Bristol. Contact: Meetings Officer, The Institute of Physics and The Physical Society, 47, Belgrave Square, London, S. W. 1., England. July 12 to 19—Seventh General Assembly and International Congress of the International Union of Crystallography. Moscow, Russia. Contact: Dr. D . W. Smits, Rekencentrum der Rijksuniversiteit, Grote Appelstraat 11, Groningen, The Netherlands. Page 46 A, Oct. July 20 to 21—Symposium on Crystal Growth. Moscow, Russia. Contact: See Above, July 12 to 19. Page 46 A, Oct. July 26 to 30—International Congress and Exhibition on Clinical Chemistry. Munich, Germany. Contact: Miinchener Mess- und Ausstellungsgesellschaft m b H , Munchen 12, Theresienhohe 13., Germany. Aug. 28 to Sept. 4—Sixth International Congress of Electron Microscopy. Kyoto, Japan. Contact: Prof. E . Snito, Secretary General, Institute of Chemical Research, Kyoto University, Kyoto, Japan. Sept. 11 to 16—National American Chemical Society Meeting. New York City. Includes Analytical Division Sessions. Contact: Charles V. Banks, Department of Chemistry, Iowa State University, Ames, Iowa. 50012. Sept. 12 to 14—Fourth Conference on Spectroscopy. Institution of Electrical Engineers, Savoy Place, London. Contact: The Institute of Petroleum, 61 New Cavendish St., London, W.I., England. Page 45 A, Dec. Sept. 20 to 23—Sixth International Symposium on Gas Chromatography. Catholic University, Rome, Italy. Sponsor: Gas Chromatography Group of the Institute of Petroleum. Contact: Dr. A. B. Littlewood, School of Chemistry, The University, Newcastle upon Tyne 1, England. Page 68 A, Sept. Oct. 3 to 7—Conference on Trace Characterization, Chemical and Physical. Washington, D. C. Contact: Dr. W. W. Meinke, Analytical Chemistry Division, National Bureau of Standards, Washington, D . C. 20234.
(Continued
DO-IT-YOURSELF ANALYTICAL INSTRUMENTATION
ADSORPTION ISOTHERMS with the CAHN RG ELECTROBALANCE
from page 129 A)
using nuclei other t h a n hydrogen. Fee for this course is $70. All lecture and l a b o r a t o r y sessions will be held a t t h e P i t t s b u r g h a i r p o r t where Varian Associates will have four A-60A spectrometers available.
Conference on Mass Spectrometry and Allied topics T h e F o u r t e e n t h A n n u a l Conference on M a s s S p e c t r o m e t r y and Allied Topics will be held M a y 22 t o 27 a t t h e Sheraton-Dallas Hotel in Dallas, Texas. T h e conference is u n d e r t h e auspices of C o m m i t t e e E-14 on M a s s S p e c t r o m e t r y of the American Society for Testing a n d M a t e r i a l s . I n addition t o contributed p a p e r s and t o technical meetings of C o m m i t t e e E-14 and its subcommittees, t h e meeting will include four one-half day symposia in which invited speakers will discuss p a r t i c u l a r subjects. These symposia with their chairmen a r e : Ionic Collision Processes. C. F . Giese, University of Minnesota Solids Studies. W. A. Chupka, Argonne National Laboratory Advances in Analytical Mass Spectrometry. A. G. Sharkey, Jr., U. S. Bureau of Mines Instrumentation Developments. L. F. Herzog, Nuclide Corp. P a p e r s on research a n d development topics p e r t i n e n t to m a s s s p e c t r o m e t r y and ionization p h e n o m e n a a r e solicited. T h e deadline for s u b m i t t i n g a b s t r a c t s is F e b . 15. C o n t r i b u t e d p a p e r s a n d correspondence should be sent t o : D r . H . M . Rosenstock, N a t i o n a l B u r e a u of S t a n d a r d s , Washington, D . C. 20234.
First National Conference on Electron Probe Microanalysis T h e First National Conference on Electron P r o b e Microanalysis will be held M a y 4 t o 6 a t t h e University of M a r y l a n d , College P a r k , M d . T h e "conference will consist of contributed and invited p a p e r s on electron probe m i croanalysis (instrumentation, theory, applications in biology, metallography, mineralogy, solid s t a t e physics, a n d other fields); Kossel line t e c h n i q u e ; scanning electron microscopy; and special symposium on specimen p r e p a r a tion of biological, metallographic, and geological specimens. An exhibit of electron p r o b e s a n d related i n s t r u m e n t s will also be held. F o r more information \vrite to D r . A. J. Tousimis, Biodynamics R e s e a r c h Corp., Inc., 6010 E x ecutive Blvd., Rockville, M d . 20852.
Industry Items M e t - B a y , I n c . , 900 H a r r i s o n St., B a y City, M i c h . 48706, has recently opened a new p l a n t for t h e manufact u r e of spectroscopic grade graphite electrodes, powders, rods, a n d other fabrications. M i d v a l e - H e p p e n s t a l l C o . , Philadelphia, Pa., has acquired the business of Loomis Engineering & Manufact u r i n g Co., Caldwell, N . J., manufact u r e r s of isostatic and hydraulic presses. A newly expanded Pressure E q u i p m e n t Division will include personnel and m a n u f a c t u r i n g facilities of Loomis.
Surface area, pore size, and pore volume of powdered samples can all be calculated from adsorption isotherms. The adsorption isotherms can be measured volumetrically or gravimetrically. The gravimetric method offers important advantages. No one offers a packaged system for gravimetric determination of adsorption isotherms. But you can assemble your own fairly easily, using commercially available components. It's something like putting together your own hi-fi system. Lots of people do it. First you'll need a recording vacuum balance, capable of operating in all atmospheres of interest, sensitive to finer than a microgram, and to one-millionth of total load. Our RG Electrobalance is the instrument of choice. Then you'll need a good pressure gage for the range 0.1-20 mm. You can get them automatic recording, too, if you wish. The rest of the system is glassware for gas-handling. Most of it may already be in your stockroom. Your laboratory supply salesman will be glad to help you with the rest. The whole system should run comfortably under $6000, plus about a week's work to put it together. When you're not determining adsorption isotherms with it, the components can be used for other measurements, such as TGA, magnetic susceptibility, and many other things. For free scientific reprints, brochures, and price lists, write
CAHN
instrument company
15505 Minnesota Ave., Paramount. Calif.. USA See us at Booth F-26 Circle No. 79 on Readers' Service Card
VOL. 38, NO. 2, FEBRUARY 1966 • 135 A
