0.2 micron membrane water filter 20 inch pleated filter cartridge for beverage filtration. Product Description. PP Pleated filter cartridge deliver high efficiency and consistent filtration of fluids in a wide range of critical applications.They are constructed of pleated melt blown filter media tahe provides removal of particals from 0.1 to 50um.The high surface area ensures long service life and low initial pressure drops.All cartridge hardware components are made from high purity