ANOW PP filter cartridge : 1)Material:PP 2)Pore size(um):0.1, 0.22, 0.45, 0.65, 1.0, 3.0, 5.0, 10 ... )Dia(mm):68mm SPECIFICATIONS:PP Filter CartridgeMATERIAL: PP (Polypropylene) PORE SIZE: 0.1um, 0.2um, 0.45um, 0.65um, 1.0um 3.0um ... REMARK: Customization is available upon request. FEATURES: 1. The membrane stack consists of PP super fine fiber membrane and imported deflector layer ...