PTFE Syringe Filters, 0.45 um, 13mm, Luer-Lok/Luer Slip, Nonsterile, 100 per pack, SF14467. Regular Price $93.47 Price $82.63 As low as $74.37. Add to Cart. Add to Wish List. Tisch Scientific Syringe Filter, Glass Fiber, 0.45 µm, 25 mm, Luer-Lok/Luer Slip, Nonsterile, 100 Pack, SF15159.