Patent ID: 8372287

Claim:
An apparatus for chemically separating a target constituent from a matrix, the apparatus comprising: a section of expanded polytetrafluoroethylene (ePTFE) tubing, a binding agent impregnated within a microscopic pore of the section of ePTFE tubing, the section of ePTFE tubing comprising a single membrane having an outer surface in direct communication with an exterior environment, the section of ePTFE tubing further having a lumen for receiving at least one of a preparatory agent and a matrix; and a container having an opening for receiving a sample from the outer surface of the single membrane; a y-adapter having a first end, a second end, and a third end, and a lumen interconnecting the first and second ends of the y-adapter, the first end of the y-adapter being coupled to a first end of the section of ePTFE tubing, the second end of the y-adapter being coupled to a second end of the section of ePTFE tubing, the section of ePTFE tubing forming a loop, and the third end of the y-adapter being configured to receive at least one of the matrix, the preparatory agent, and a stripping agent.