Ro membrane/ Reverse osmosis membranes high desalination rate of 99.8% Hydranautics ... field.Models: 40-40, 80-40Brands, DOW, Hydranautics, CSMReverse osmosis membrane is used to purify water and remove salts and other ... ): 1-13Dimensions: 40 inches long; 4 inches diameter nominal RO membrane, brackish water desalination membrane, reverse osmosis ...