Device for solid phase extraction and method for purifying samples prior to analysis
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United States of America Patent
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Apr 20, 2004
Grant Date -
Sep 25, 2003
app pub date -
Mar 19, 2002
filing date -
Mar 19, 2002
priority date (Note) -
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Abstract
A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the well having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter within the well; a bed of sorbent particles within the well below the first filter, and a second filter having a diameter smaller than the first filter within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.
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