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
16532----------K - Syringe Filter, Minisart High Flow, PES, 28 mm, 0.22µm, sterile, 50 pc/PAK | analytics-shop.com
Millex-GS Syringe Filter Unit, 0.22 µm, mixed cellulose esters, 33 mm, ethylene oxide sterilized | SLGS033SB
Foxx Life Sciences Syringe Filter, 13 mm, 0.22 um PVDF; 100/Pk from Masterflex
LAB SAFETY SUPPLY Syringe Filter: 30 um Membrane Dia., 0.22 um Pore Size, PVDF, 30 PK - 11L849|11L849 - Grainger