Polypropylene Syringe Filters, 0.22 um, 25mm, Double Luer Lock, PP Housing, Nonsterile, 100 per pack, SPEC18187. Polypropylene Syringe Filters, 0.22um, 25mm, Double Luer Lock, PP Housing, Nonsterile, 100 per pack. Regular Price: $98.00. Price $83.30. Buy 10 for $74.97 each and save 10%.