431118 | Corning® 500 mL Bottle Top Vacuum Filter, 0.22 µm Pore 33.2cm² PES Membrane, Fits 45 mm Diameter Necks, Sterile, 12/Case | Corning
Millex-GV Filter, 0.22 µm A 4 mm diameter sterile syringe filter with a 0.22 µm pore size hydrophilic PVDF membrane. Comes in a pack of 100. | Sigma-Aldrich