Millex Syringe Filter Unit, Vial Vent 0.22 µm A 25 mm diameter sterile syringe filter with a 0.22 µm pore size hydrophobic PVDF membrane. Comes in a pack of 50. | Sigma-Aldrich
Nylon Syringe Filter, iPure™ brand, 0.22µm, 25mm housing, case quantity.
IWT-ES10310 LabExact PES Membrane Syringe Filter 0.22 µm Pore, 17 mm Diameter, High Pressure (100/Pack) Ohaus Scale, Magnetic Stirrer, Vortex Mixer, Sample Prep, Centrifuge