Oct 11, 2021 · Discounting 0.22 um syringe filter for venting Leading Supplier of PTFE Syringe Filter,Welcome to Inquiry Syringe Filters, Polyethersulfone (PES), Sterile, 0.22 (μm Nest syringe filters have pore size either 0.22µm or 0.45µm, and diameter 13mm or 25mm, with membrane materials either with PES or PVDF membranes. For sample volumes of 2mL to 100mL.