Polytetrafluoroethylene PTFE Hydrophilic Syringe Filters, 0.22um, 25mm, Luer-Lok/Luer Slip, Sterile, 100 per pack, SF18238. Regular Price $149.44 Price $129.95. Add to Cart. PVDF Syringe Filters, 0.22 um, 13mm, Luer-Lok/Luer Slip, Nonsterile, 100 per pack, SF14454. Regular Price $82.28 Price $71.55 As low as $64.40.