pore size 0.45um hplc filter. Filter Membrane: 0.45 um Pore Size, 47 mm Dia, Mixed Cellulose Item Filter Membrane; Pore Size 0.45 um; Diameter 47 mm; Material Mixed Cellulose Cytology, HPLC Samples, High Flow Rates and Larger market@aijirenvial.com Inquire Now.