Teffil ptfe membrane filter 0.22 um for wholesales-Voa Vial Wholesales luer lock PTFE membrane filter distributor-PTFE 4 mm Puradisc Syringe Filters Membrane Nonsterile without tube tip Nonsterile with tube tip Sterile without tube tip Nylon PVDF PTFE PVDF Nylon PVDF Quantity/pack Pore size (µm) 0.2 6777-0402 6786-0402 6791-0402 50 0.45 6777