PP pleated cartridge filter , nominal and absolute grade . the micron rate can be 0. ... .2um,0.45um,1.0um,5um,10um,30um,50um PP pleated cartridge filter , nominal and absolute grade . the micron rate can be ... 5",10",20",30",40"Widely used for water treatment , food &beverage , pharmaceutical , chemicals . for the prefiltration use. PP pleated cartridge filter /depth filter /water filter