Syringe Filter 13,25,33MM 0.22,0.45um MCE This syringe filter with a Mixed Cellulose Esters membrane, for non-sterile filtration, has a 0.22 µm or 0.45μm pore size used in Fine particle removal from aqueous solutions. Read More. Contact Now Syringe Filter 13,25,33MM 0.22,0.45,0.8um Nylon