palstic 0.22 um ptfe syringe filter for venting PTFE Syringe Filter, 13mm, 25mm, 0.22uM, 0.45uM, Sterile PTFE Syringe Filter, Sterile, Individual Packed, Four Options: 0.22 uM or 0.45 uM Pore, 13 mm or 25 mm Diameter. $180/pack of 100 or $120/pack of 96 0.22 or 0.45 micron PTFE syringe filter, 13mm or 25 mm, single packed.