APPLIED SCIENCE Laboratories, Inc

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NEWS 4:15 Quantitative Evaluation of Chromatograms by Digital Computers. F. Baumann, E. Herlicska, J. Blesch, Varian Aerograph, Walnut Creek, Calif. 4:30 Pressure Programming in Gas Chromatography. J. D. Kelley, J. Q. Walker, McDonnell Douglas Corp., St. Louis, Mo. 4:45 Substituent Effects in Gas Chromatography. B. L. Karger, Y. Elmehrik, W. Andrade, Northeastern University, Boston, Mass. Thursday Morning, Jan. 23 FLAVORS, PYROLYSIS, GENERAL CHROMATOGRAPHY C. J. W. Efrooks, P r e s i d i n g

9:00 Differentiation between Coffees and Coffee Blends by Computer Evaluation of GLPC Aroma Profiles— Comparison of Numerically Derived Quality Predictions with Organoleptic Evaluations. R. E. Biggers, J. J. Hilton, M. A. Gianturco, Coca-Cola Company, Atlanta, Ga. 9:20 Volatiles of Gravenstein Apples Identified by Gas Chromatography— Mass Spectrometry. R. A. Flath, D. R. Black, R. R. Forrey, G. M. McDonald, T. R. Mon, R. Teranishi, U. S. Department of Agriculture, Albany, Calif. 9:40 Membrane Molecular Separators for Gas Chromatography-Mass Spectrometer Interfaces. D. R. Black, R. A. Flath, R. Teranishi, U. S. Department of Agriculture, Albany, Calif. 10:00 Consideration of Parameters for Coupling Gas Chromatographs to Mass Spectrometers. C. Merritt, Jr., J. T. Walsh, M. L. Bazinet, U. S. Army Natick Laboratories, Natick, Mass. 10:20 Separation of the Neon Isotopes by Cryogenic Chromatography. A. Purer, R. L. Kaplan, D. R. "Smith, U. S. Department of the Interior, Amarillo, Texas 10:50 A Laser Pyrolysis Apparatus for Gas Chromatography. O. F. Folmer, L. V. Azarraga, Continental Oil Company, Ponca City, Okla. 11:10 Organic Analysis by PyrolysisGas Chromatography—Mass Spectrometry. A Candidate Experiment for the Biological Exploration of Mars. P. G. Simmonds, G. P. Shulman, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, Calif. 11:30 Pretransformation Behavior of Nematic Phases in Relation to Retention Volumes. H. Kelker, Farbwerke Hoechst AG, Frankfurt/Main, Germany 11:50 Summary

ADSORBOSIL-5 All-Purpose Adsorbent For Thin Layer Chromatography ADSORBOSIL-5 is a silica gel adsorbent for TLC which is comparable in q u a l i t y to other adsorbents costing much more. ADSORBOSIL-5 contains no binder, yet it adheres far more f i r m l y to a glass plate than ordinary silica gel adsorbents containing binders. ADSORBOSIL-5 is t h o r o u g h l y solvent-washed; it is completely f r o m organic contaminants.

free

ADSORBOSIL-5 w i l l do a better job in making all TLC separations req u i r i n g a silica gel adsorbent. If you do any w o r k w i t h thin layer chromatography at all, it w i l l pay y o u to become acquainted w i t h ADSORBOSIL-5.

Bile Acids. A standard bile acid mixture (Mixture TLC-6, available from Applied Science) was separated, along with the individual components, on ADSORBOSIL-5. Solvent system: chloroform/acetone/acetic acid, 70/20/10 by volume. From left to right: mixture, lithocholic acid, dehydrocholic acid, desoxycholic acid, cholic acid methyl ester, cholic acid, taurocholic acid. WRITE FOR OUR 1969 CATALOG #12

APPLIED SCIENCE

Clinical Laboratory Analyses

Laboratories, Inc.

Oak Ridge National Laboratory and the National Institute of General Medical Sciences will sponsor the first animal symposium on "Automated, High-Resolution Analyses in the Clinical Laboratory," March 13 and 14, 1969, at ORNL.

P. O . B o x 4 4 0

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State C o l l e g e , Pa. 1 6 8 0 1

West Coast Branch: 1 1 135 Inglewood A v e . Circle No. 97 on Readers Service Card

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Inglewood, Calif 9 0 3 0 4

See ACS Laboratory Guide for All Products/Sales Office V O L . 4 0 , N O . 1 3 , NOVEMBER 1 9 6 8

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