... 4)tank capacity:9L counter top RO water filter (CE ROHS)1.Reverse osmosis water filtration system with pump and auto flush2 ... microgranule,micro colloid and micro suspended materials. To make the water which into the RO membrane is suitable so as make ... ,metal,bacterials and so on,onlyleft the water molecule and dissolved oxygen,output water is purity water Counter top RO water filter (CE ROHS)