TPP Syringe filter 0.22 µm, Ø 33 mm | Buch & Holm A/S
Millex-GV Syringe Filter Unit, 0.22 µm, PVDF, 33 mm, gamma sterilized A 33 mm diameter sterile syringe filter with a 0.22 µm pore size hydrophilic PVDF membrane. Comes in a pack of 50. | Sigma-Aldrich
Pack of 4) Sterile Vacuum Filter Cup 250mL/500mL 0.22um Pore Size PES Membrane | eBay