Syringe Filter,Hydrophobic PTFE Membrane Disc,Diameter 25 mm,Micron Pore Size 0.22 μm,Non-sterile Pack of 10,Red 4.5 (9) $349 - $728 Corning 430769 Polystyrene Vacuum Filter/Storage Bottle System, Graduated, Sterile, Cellulose Acetate Membrane, 0.22 Micron, 500mL Capacity (Case of 12) No reviews $17243 ($14.37/Vacuum Filter) $184.57