WATER is passed through `R-SO_(3)`H resin Water is passed through `R-OVERSET(+)NH_(3)Ooverset(Theta)H` resin Water is passed through both `RSO_(3)H` resin and `R" "overset(o+)NH_(3)OoversetTheta(H)` resin We can't get demineralised `H_(2)O` artificially by resins