Sample inlet liner

Details Sample inlet liner Sample inlet liner

1998-01-29

1999-09-21

Spitzer, Robert

Gas separation: apparatus

Chromatography type apparatus

55524, B01D 1508

Patent

active

059548622

ABSTRACT:
A sample inlet liner includes an internal surface barrier wherein the surface barrier is situated so as to circumvent undesirable reactions between the sample and the liner. The barrier surface composition includes PTFE to an extent sufficient to reduce or eliminate such undesirable reactions, and the surface barrier is situated so as to receive substantially all of the wetting of the liner by an injected sample, such that little or no contact is made by the sample with a surface that lacks sufficient PTFE. As a result, decomposition or adsorption of the sample is reduced.

REFERENCES:
patent: 4370376 (1983-01-01), Gangal et al.
patent: 5248428 (1993-09-01), Hagen et al.
Bill Wilson, Philip L. Wylie, Matthew S. Klee, "Large Volume Injection for Gas Chromatography Using a PTV Inlet," Mar., 1997, Copyright Hewlett-Packard Company, Pub No. (23) 5965-7770E, pp. 1-6.
Hans G.J. Mol, Pieter J.M. Hendricks, Hans-Gerd Janssen, Carl A. Cramers and Udo A. Th. Brinkman, "Large Volume Injection in Capillary GC Using PTV Injectors: Comparison of Inertness of Packing Materials," Journal High Resolution Chromatography, vol. 18, Feb., 1995, pp. 124-128.

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