PTFE Syringe Filters, 5 um, 25mm, Luer-Lok/Luer Slip, Nonsterile, 100 per pack, SF17400. Regular Price $149.74 Price $130.21 As low as $110.56. Add to Cart. Add to Wish List. PTFE Syringe Filters, 0.22 um, 25mm, Double Luer Lock, PP Housing, Nonsterile, 100 per pack, SPEC16251.