Syringe Filter, 25 mm Membrane Dia., 0.22 um Pore Size. Item # 12K969. Mfr. Model # 12K969. UNSPSC # 41104922. Catalog Page # 662. 662. Country of Origin USA. Country of Origin is subject to change. Lab Safety Supply disposable, nonsterile PVDF hydrophobic filtration media syringe filters feature Luer-Lok™ and pressure fittings.