PTFE Syringe Filters, 0.22 um, 13mm, Luer-Lok/Luer Slip, Sterile, 100 per pack, SF14472. Regular Price $118.78 Price $103.29. Add to Cart. Add to Wish List. PTFE Syringe Filters, 0.22 um, 33mm, Luer-Lok/Luer Slip, Nonsterile, 100 per pack, SF16002. Regular Price $153.00 Price $135.25 As low as $121.73.