Delmar SCIENTIFIC LABORATORIES - Analytical ... - ACS Publications

May 17, 2012 - Delmar SCIENTIFIC LABORATORIES. Anal. Chem. , 1961, 33 (10), pp 77A–77A. DOI: 10.1021/ac60178a736. Publication Date: September ...
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NEWS Chemical and Petroleum Instrumentation Session

Engineering Reliability into Process Control, Thursday morning; and Process Information and Measure­ ments Techniques, Thursday after-

Other instrumentation sessions will be devoted to Meteorology, Cement and Lime, Strain Gage, Photography, Bio­ medical, Marine Sciences, Aero-Space, Electronic, Pulp and Paper, Shock and Vibration Testing, Feedback Control, Computers and Data Handling and Computation. There will be an education workshop which includes a session entitled "Is In­ strumentation a Professional Field?" (Wednesday morning and afternoon). Other sessions include Institute of Man­ agement Sciences, Instrument Manu­ facturers, Precision Measurements As­ sociation, Institute of Radio Engineers, and the Committee on Standards Labo­ ratories. Copies of the program and other de­ tails are available from IAS, Penn Sheraton Hotel, Pittsburgh 19, Pa.

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N e w u n i q u e j o i n t s are l e a k p r o o f O-Rings m a d e of V i t o n Eliminates c o n t a m i n a t i o n Fast e a s y a s s e m b l y . . . n o j o i n t s t o g r e a s e V i t o n O-Rings h o l d pressures as l o w a s 10"*, for temperatures from — 4 0 ° F to + 5 0 0 ° F. N e w d e s i g n f o r O - R i n g needle v a l v e stop cocks

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Gas Chromatography Nomenclature Following publication of papers on the nomenclature of gas chromatog­ raphy [Ambrose, D., Keulemans, A. I. M., and Purnell, J. H., Anal. Chem. 30 (1958) 1582, and Johnson, H. W., and Stross, F. H., Anal. Chem. 30 (1958) 1586], a special group was formed under the auspices of the Section of Analyti­ cal Chemistry of the International Union of Pure and Applied Chemistry to draw up Recommendations for a Standard Terminology. The Prelimi­ nary Recommendations made by the Group were approved by the Commit­ tee of the Analytical Section in 1959 and have been published [Pure and Applied Chemistry 1, (1960), 177, and Gas Chromatography 1960 (ed. R. P. W. Scott), Butterworths, London, 1960, p. 423]. As a result of comments made about the Preliminary Recommendations it is proposed that amendments should be submitted to I.U.P.A.C. on the follow­ ing two points : (1) In the section on apparatus per­ formance, an equation (equation 12) is given which relates the resolution ob­ tained to the number of theoretical plates in a column. This equation is only valid when the gas hold-up is negligible compared with the retention volume, a condition which is not ful-

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