Membrane cartridge filters from the PP Series are among the most delicate filters used in liquid and gas filtering. Polypropylene Membrane Micro Cartridge Filters have a high filtration capacity and a long lifespan. Furthermore, PP Series Cartridge Filters are available in a variety of microns, including 0.11, 0.22, 0.45, 0.65, 1, 3, 5, 10, and 20, as well as lengths ranging from 5 inches to the necessary length.