0.22 µm Syringe Filter, PES (Sterile), Blue, ⌀ 33 mm - STARLAB
MilliporeSigma Millex -GV Sterile Syringe Filter Unit, PVDF, 0.22 m PVDF; | Fisher Scientific
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