Minisart Syringe Filters The Easy Choice – Clean and Safe The filters are clean and safe as they are almost free of leachables and 15 mm PTFE PP 0.2 μm Male Luer Slip White, Printed No 500 17573—–Q 15 mm PTFE PP 0.45 0.22 Filter at Thomas Scientific Syringe Filter, PES, 0.22µm, 30mm Diameter. Denville. around it.