Millex Syringe Filter, Durapore ® ( PVDF ), Non-sterile, 0.45 µm pore size, 33 mm diameter, Millex-HV Durapore ® ( PVDF ) membrane, hydrophilic 0.45 μm pore size Expand SLGVM33RS Medical Millex-GV Syringe Filter Unit, 0.22 µm, PVDF, 33 mm, gamma sterilized, A 33 mm diameter sterile syringe filter with a 0.22 µm pore size hydrophilic PVDF membrane.