Flow divider for gas chromatographs

Details Flow divider for gas chromatographs Flow divider for gas chromatographs

1988-03-01

1989-10-10

Hill, Jr., Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

55197, 73 231, G01N 3002

Patent

active

048730580

ABSTRACT:
Upstream and downstream flow dividers are connected in series between a sample dispenser and a gas chromatograph separation column. The downstream flow divider is connected to a source of carrier gas, and the system can be backflushed with carrier gas to remove residual quantities of sample material and elute the sample.

REFERENCES:
patent: 3513636 (1970-05-01), Halasz
patent: 4035168 (1977-07-01), Jennings
McNair, Dr. Harold M., "Recent Advances in GC", Apr. 1985, p. 7.
Dodo et al., "Optimized Flow Programming for Temperature-Programmed Gas Chromatography", J. of Chromatography, 328 (1985), pp. 49-53.
Lee et al., Open Tubular Column Gas Chromatography, Theory and Practice, ISBN 0-471-88024-8 (1984), pp. 195-198 and 227.
Nestrick et al, "Low Splitting-Ratio Injector for Gas Chromatography Analytical Chemistry", vol. 55, No. 12, Oct. 1983, 2009-2011.
Wicar, S., "Mass Flow Control and Temperature Programming in Gas Chromatography", J. of Chromatography, 295 (1984), pp. 395-403.
Lee et al., "Open Tubular Column Gas Chromatography, Theory and Practice", ISBN 0-471-88024 (1984), pp. 116-118 and 166.
J & W Scientific, "High Resolution Chromatography Products", 1987/1988, pp. 118-119.
Jennings et al., "Sample Injection in Gas Chromatography", J. of Chromatographic Science, vol. 24, Jan. 1986, pp. 34-40.
SGE, "Column Pressure Switching System", Mar. 1984.
Wright, "A Multidimensional Conversion System for Capillary GC", American Laboratory, Aug. 1985.

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