PTFE Syringe Filters, 5 um, 25mm, Double Luer Lock, PP Housing, sterile, 1000 per pack, SPEC18141. Regular Price: $2,494.00. Price $2,244.60. Add To Cart. PTFE Syringe Filters, 0.22 um, 20mm, Threaded Double Luer Lock, ABS Housing, Nonsterile, 100 per pack, SPEC18142.