Patent ID: 6196074
Filing Date: 2001-03-06
Classification: E21B

Abstract:
A diffusion sampling device for sampling contaminants in liquids, comprising:a semi-permeable membrane comprising a first end, a second end, a longitudinal axis, an inside surface and an outside surface, said semi-permeable membrane shaped to form a cavity for receiving fluids, said semi-permeable membrane comprising an opening at said second end, and a substantially leak-proof seam spaced apart from said first end;a nozzle portion comprising a longitudinal axis, said nozzle portion carried by said second end of said semi-permeable membrane, wherein said nozzle portion is in fluid communication with said opening of said semi-permeable membrane;a top portion carried by said first end of said semi-permeable membrane;a clamping element for removably affixing said second end of said semi-permeable membrane to said nozzle portion in substantially concentric alignment about said longitudinal axes; and,means carried by said nozzle for removably sealing said semi-permeable membrane and for filling an discharging fluid to and from said semi-permeable membrane through said nozzle.