Millex-GV Filter, 0.22 µm A 25 mm diameter sterile syringe filter with a 0.22 µm pore size hydrophilic PVDF membrane. Comes in a pack of 50. | Sigma-Aldrich
IWT-ES10322 LabExact PTFE Membrane Syringe Filter 0.22 µm Pore, 30 mm Diameter, High Pressure (100/Pack) New Laboratory Setup Savings - up to 40%, Magnetic Stirrer, Vortex Mixer, Sample Prep, Centrifuge
MilliporeSigma Millex -GS Sterile Syringe Filter Unit, MCE, 0.22 m (Research | Fisher Scientific