News cago. III.; I. Kaleps, Wright-Patterson Air Force Base Study of the Hollow Cathode Sources for Gas Monitoring in the 25 km to 65 km Altitude Region. G. L. Johnson, J. Reich, E. L. Grove, I IT Research Institute, Chicago, III. Recent Advances in Glow-Discharge Emission for Spectrochemical Analysis. J. Loeb, Dr. H. Ritzl, RSV Spectroscopy Division of Carl Zeiss, Hechendorf, West Germany Simplified Computer Operations in Spectrochemical Analyses. Harry Dryer, Applied Research Laboratories, Detroit, Mich. Analytical Usage of the New Small Crater Laser Microprobe. Fredrick Breck, Fisher Research Laboratories, Waltham, Mass.
GAS CHROMATOGRAPHYMASS SPECTROMETRY Study of Carbohydrates by Silylation. Charles R. Sweeley, Dept. of Biochemistry, Michigan State University, Lansing, Mich. (Awards Address: Chicago Gas Chromatography Discussion Group Award for outstanding work in gas chromatography) Quantitative Aspects of the Flame Ionization Detector in Flow Programmed Gas Chromatography. Ram Levy, John Q. Walker, Clarence J. Wolf, Research Division, McDonnell Douglas Corp., St. Louis, Mo. Determination of Components in Cough Syrups. Joseph Martin, Abbott Labs, North Chicago, III. Analysis of Polymers by Gas-Liquid Chromatography. Michael Kulisz, V. Vincent Watson, Richardson Co., Melrose Park, III. The Use of Gas—Liquid Chromatography in the Printing Industry. J. B. Himes, E. S. Derzko, Richardson Co., Melrose Park, III. Isolation of Gas—Liquid Chromatographic Determination of Trace Amounts of Amines in Related Compounds. L. L. Metcalfe, Armour Industrial Chemicals, McCook, III. Capillary Gas Chromatography Analysis of Isomeric Amines in Related Compounds. D. Martin, Armour Industrial Chemicals, McCook, III. Gas Chromatography Analysis of Perfume Compounds. A. Modestas, Armour Dial, Inc. Molecular Characterization of Silicones by Gel Permeation Chromatography. Fred Larson, Bendix Corp., Kansas City, Mo. Gas Chromatographic Analysis of Vaporous Contaminants in Living Spaces. J. P. Hoeppesch, E. Lanterman, BorgWarner, Des Plaines, III. Limiting Factors Involving Analysis by Gel Permeation Chromatography. J. Armstrong, Arro Laboratories, Joliet, III. Functional Analysis by Combination Reaction Gas Chromatography-Mass Spectroscopy. F. E. Régnier, J. Huang, Purdue University, Lafayette, Ind. Gel Permeation Chromatography Calibration of Normal Paraffins by Carbon Number. R. E. Thompson, D. C. Ford, E. G. Sweeney, Sinclair Research, Harvey, III. VPC Analysis of Water in Chlorophyll. T. M. Cotton, K. Ballschmiter, J. J. ^
Circle No. 17 on Readers' Service Card
ASK MATHESON... ...about a new flowmeter that was made for laboratories on a budget Flo-Tronic by Matheson costs little more than a rotometer. But a new thermal technique results in accuracy of 3% of full scale with changes in pressure and temperature having minimal effect on readings. Features: Fast response —2 sec. (0 to full scale)... Reproducibility—2% of full scale... Four flow ranges —0-300 to 0-10,000 std. cc./min.
...to explain why it pays to leave the mixing to us It pays because Matheson has the high load, high sensitivity analytical balances necessary to make gas mixtures gravimetrically (the gas is actually weighed). We call our gravimetric mixtures Primary Standards. They have accuracies equal to or exceeding 1 % of the c o m ponent value. At concentrations above 2 % , accuracies are ± 0 . 0 2 % absolute. Costs a little more but these accuracies pay off for you in minimized errors and reduced overall costs. A final reason —our experience in making gas mixtures is unequalled in the industry.
...why the two stages in our Model 8 Regulator result in maximum control and longer life Two-stage design —high inlet pressure is reduced automatically to a pre-set intermediate pressure in the first stage which feeds gas at a relatively stable pressure to the second stage. Two stages result in a degree of control that permits an unvarying delivery pressure until the cylinder is almost empty. Because the second stage is protected from high-pressure surges, long, trouble-free service is assured. Ask Matheson now — Matheson offers the most complete gas service
MATHESON P. O. Box 85, East Rutherford, N. J. 07073 NAME FIRM ADDRESS CITY STATE Please send me "in depth" answers Π Flo-Tronic Flowmeter (Engineering Report) • Matheson Primary Standards (Brochure)
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ZIP
Model 8 Regulator (Catalog 26—over 100 pages devoted to gases, mixtures, and other gas handling equipment in addition to regulators)
MATHESON GAS PRODUCTS A Division of Will Ross, Inc., East Rutherford, N.J.; Cucamonga, Calif.; Gloucester, Mass.; Joliet, III.; LaPorte, Texas; Morrow, Ga.; Newark, Calif.; Whitby, Ont. I
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Circle No. 23 on Readers' Service Card
VOL. 4 1 , NO. 4, APRIL 1969
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