Teffil 0.22 um ptfe filter on stock Simsii Syringe Filter, Nylon Filtration Medium, Non Sterile This item: Simsii Syringe Filter, Nylon Filtration Medium, Non Sterile Membrane Lab Disc, Diameter 13 mm, Pore Size 0.22 um, Pack of 100 $49.99 ($5.00/10 Items) Only 8 left in stock - order soon.