Solid phase extraction apparatus

Details Solid phase extraction apparatus Solid phase extraction apparatus

1993-11-23

1995-08-08

Spear, Frank

Liquid purification or separation

Processes

Ion exchange or selective sorption

210236, 210351, B01D 1500

Patent

active

054395933

ABSTRACT:
Apparatus for retaining a sorbent bed without permitting voids to be created and that can be readily handled by automated systems is disclosed. A solid phase extraction apparatus is disclosed that is most preferably comprised of a body that contains a sorbent bed and a cap that forms an axial sliding seal with the body. A sleeve is provided to retain the body and create an outside geometry similar to that of a standard glass vial. The sliding seal permits voids in the sorbent bed to be eliminated by axial compressive sealing forces. In a most preferred embodiment, conical sealing surfaces are provided at each end of the disclosed cartridge to facilitate removal of the cartridge after the axial sealing forces are released. The cap and the body are also provided with surfaces compatible with luer fittings, that provide flexibility and permit the use of the invention with existing fluid flow systems.

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Sorbent Extraction Technology, Analytichem International Inc., Harbor City, CA 90710 (1985).
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ANSI/HIMA MD70.1 (1983).
Spe-ed Wiz, The Automated Solid Phase Extractions Sample Preparation System, Applied Separations Feb. 1989.

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