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Extraction articles and methods

  • US 6,492,183 B1
  • Filed: 03/13/2001
  • Issued: 12/10/2002
  • Est. Priority Date: 09/14/1998
  • Status: Expired due to Term
First Claim
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1. A one-piece multilayer solid phase extraction article comprisinga) a first porous support layer, b) a second porous support layer attached at least one thermo-mechanical attachment site to said first porous layer, and c) a layer of solid phase extraction medium disposed between, and in intimate contact with, the first and second porous support layers such that a portion of the solid phase extraction medium is bound within the thermo-mechanical attachment site.

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