Patent ID: 8528747

Claim:
A solid phase extraction filtration disk comprising: an inner member located within an outer member; the inner member in the form of a circular molded cake, the cake molded of a liquid suspension comprising a sorbent mixed with glass microfibers, wherein the sorbent and glass fibers are dispersed throughout the cake, the cake having a first circular side, a cylindrical side and a second circular side, and wherein the glass microfibers of the cake having a length in a range of 1 μm to 3 mm; the outer member comprising a first circular portion covering the first circular side of the cake, a molded cylindrical ring portion covering the cylindrical side of the cake, and a molded second circular portion covering the second circular side of the cake; the outer member first circular portion comprising a microfiber mesh; the outer member molded cylindrical ring portion comprising glass microfibers molded over the cylindrical side of the cake, wherein the glass microfibers of the outer member molded cylindrical ring portion having a length in a range of 1 μm to 3 mm; and the outer member molded second circular portion comprising glass microfibers molded over the second circular side of the cake, wherein the glass microfibers of the outer member molded second circular portion having a length in a range of 1 μm to 3 mm.