... 93) GB14591-93 (II)Typical measured valuesFe, % , ≥18.519.1Reducing substances (counted by Fe2+), % , ≤0.150.01Basicity, %9.0-14.014 ... the aluminum, chlorine and heavy metal ions and other harmful substances, and also have no iron ion water phase transfer, ... decide, system water can original with other medicine dose as reference, under the same conditions polymerization ferric sulfate and solid ...