water filter, use in water purifier, water system, water dispenser,and ro water cup.easy using,and long life,RO filter RO membraneMaterial: CSMRO membrane pore size of 0.0001 microns, can retain the bacteria, viruses, organic matter, colloid, pesticides, heavy metals and most of the salts in water, the treated water tastes sweet and delicious.Caution: for drinking water applications. Do not use ...