2013/7/9 · Equipped with a polypropylene housing, all three filters have a female luer lock inlet, a male luer slip outlet, and a 0.2 micron pore size. The Hydrophobic Filters are offered with a PTFE membrane and are available in 25 mm and 15 mm diameters and the Hydrophilic filter is available with a PES membrane and in a 25 mm diameter.