Polypropylene Syringe Filters, 0.22 um, 13mm, Luer-Lok/Luer Slip, Nonsterile, 100 per pack, SF14704. Regular Price $78.49 Price $68.25 As low as $61.43. Add to Cart. PTFE Hydrophilic Syringe Filters, 0.22 um, 25mm, Luer-Lok/Luer Slip, Nonsterile, 100 per pack, SF18001.