... on.And here we would like to recommend our CN-CA membrane filter discs. the details are as below :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 ...