Patent ID: 6723236
Filing Date: 2004-04-20
Classification: B01D,B01J,B01L,G01N,Y10T

Abstract:
A solid phase extraction device comprising:a reservoir with an opening for receiving fluids; a well comprising an internally tapered wall, the well having a wider interior diameter at a first end closest to the reservoir than at a second end close to an exit spout, the well for conducting an extraction; an exit spout at the second end of the well for discharging fluids; a first filter press sealed between the internally tapered walls of the well for retaining insoluble components of the fluids; a second filter having a smaller diameter than the first filter press sealed between the internally tapered walls of the well spaced apart and toward the exit spout from the first filter; and a quantity of sorbent particles partially filling the volume in the well between the first and second filters, and a void volume between the quantity of sorbent particles and the first filter for separating the quantity of sorbent particles from the first filter, wherein fluids received through the opening of the reservoir and contained by the reservoir pass through the first filter, the sorbent bed and the second filter to affect an extraction.