... 93) GB14591-93 (II)Typical measured valuesFe, % , ≥18.519.1Reducing substances (counted by Fe2+), % , ≤0.150.01Basicity, %9.0-14 ... The economy, high quality, and high efficiency lron kind of inorganic polymer flocculant, 2. Polymeric ferric sulfate coagulation excellent performance, ... aluminum, chlorine and heavy metal ions and other harmful substances, and also have no iron ion water phase transfer, ...