Measuring and testing – Gas analysis – Gas chromatography
Patent
1981-01-05
1982-11-23
Birmiel, Howard A.
Measuring and testing
Gas analysis
Gas chromatography
422 89, G01N 3108, B01D 1508
Patent
active
043598919
ABSTRACT:
A repetitive gas chromatograph employing a backflush valve downstream from the detector and a separate sample injection valve located upstream located directly upstream from the single chromatographic column. Each valve is operated independently of the other so as to allow flexibility in the timing of going into backflush operation and returning the sample valve immediately after sample injection onto the column to sample passage through the sample valve so as to more quickly establish equilibration of the sample and the sample valve's walls. Type and location of sample valve and backflush valve allow continuous monitoring of a sample stream.
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Journal of Gas Chromatograph by O. L. Hollis and W. B. Hayes, vol. 4, No. 7, pp. 235-239, Jul. 1966.
Ahlstrom, Jr. Ross C.
Johnson Mark S.
Moore Jerry P.
Schoppe, Jr. Ivo R.
Barrow M. W.
Birmiel Howard A.
The Dow Chemical Company
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