... and most alkaline liquid, especially for alkaline . SPECIFICATION: MATERIAL: CN-CA(Nitrocellulose-cellulose acetate) PORE SIZE: 0.1um, 0.22um, 0 ... also available, please refer to our showroom. FEATURES: 1. CN-CA is quite good membrane material with quite uniform pore size ... , etc... 4. Sterilization for beer, grape wine, beverage, etc. CN-CA Filter Membrane