Cartridge for liquid chromatograph

Liquid purification or separation – With means to add treating material – Chromatography

Patent

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Details

55386, B01D 1308

Patent

active

044513631

ABSTRACT:
A replaceable cartridge column for use in high pressure liquid chromatograph pumping systems including a solid tube having a small bore therethrough carrying a packing material. The tube and terminated by a recess at each end which extends from the rim at the end of the tube inwardly and in communication with the bore. A plastic seal plug is disposed in the recess at each end to extend slightly beyond excess the length of the tube when so disposed and carries at its outer end a coaxial frit filter. The recess is provided with a flat bottom and the plastic plug has a corresponding bottom constructed to be positioned in face-to-face sealing opposition to fluid leakage and having further a flat sealing surface at its other end to engage a sealing surface of an end fitting of the liquid chromatographic pumping system and to provide a first, primary seal therewith independent of the rim of the column tube.

REFERENCES:
patent: 3682315 (1972-08-01), Haller
patent: 3791522 (1974-02-01), Eisenbeiss et al.
patent: 4228007 (1980-10-01), Rausch et al.
patent: 4313828 (1982-02-01), Brownlee
patent: 4389313 (1983-06-01), Charney et al.

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