cellulose acetate membrane, pore size 0.22 μm, membrane area 19.6 cm 2, filter capacity 250 mL: Pricing: CLS430768: cellulose acetate membrane, pore size 0.45 μm, membrane diam. 19.6 cm 2, filter capacity 250 mL: Pricing: CLS430769: cellulose acetate membrane, pore size 0.22 μm, membrane area 33.2 cm 2, filter capacity 500 mL: Pricing