Microcolumn for use in sample extraction

  • US 6,530,288 B1
  • Filed: 06/22/2000
  • Issued: 03/11/2003
  • Est. Priority Date: 06/22/2000
  • Status: Active Grant
First Claim
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1. A housing of unitary construction for containing a sorbent used in chemical analysis, comprising:

  • a hollow tubular body member, said hollow tubular body member having a top end and a bottom end, and an interior wall and an exterior wall, said top end being open for receiving a sorbent and samples for chemical analysis, said bottom end having a convex end cap thereon, said convex end cap having an interior surface and an exterior surface, and an aperture therethrough, said convex end cap forming a sloping profile from said interior wall to said aperture, said interior surface of said convex end cap having a plurality of raised projections thereon, said raised projections being spaced apart to provide a plurality of channels therebetween for communication of a fluid to said aperture.

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