0.45 Syringe Filter Pvdf found in: Syringe filter PVDF 25mm 0.45um 1000/pk, Syringe Filter, PVDF, 0.45µm, 30mm Diameter, Syringe Filter, PVDF, 0.45µm, 13mm.. Denville Scientific Syringe Filters are constructed so that the sample must pass through the membrane, not leak around it.