What membrane filter pore size should I use for sterilization? Regardless of the membrane filter material, to filter most HPLC and GC fluids/solvents. Syringe Filters, Cellulose Acetate (CA), 0.45um, Sterile, 13mm, 100 . Syringe Filters, Cellulose Acetate (CA), 0.45um, Sterile, 13mm, 100/pack · Very low binding capacity for proteins.