Specifications include, but are not limited to: a. The LIQUID FERRIC SULFATE shall meet the physical and chemical properties listed below. The LIQUID FERRIC SULFATE shall be supplied as an aqueous solution containing not less than 11.0% ferric iron and not more than 13.6% ferric iron, all soluble. b. The LIQUID FERRIC SULFATE shall be manufactured from a source of virgin mined iron ore and selected high purity components i.e., magnetite, hematite, ferrous sulfate, etc. - and a "water white" grade of sulfuric acid. c. The LIQUID FERRIC SULFATE shall be free from extraneous material and shall be transported and delivered at such concentration and temperature that no freezing occurs. The liquid shall be suitable for feeding by means of metering pumps or other metering devices constructed of corrosion-resistant materials. d. The LIQUID FERRIC SULFATE shall have the following chemical properties: 1. Ferric iron: 11.0 – 13.6% 2. Ferrous iron 0.25 % max. 3. Free Acid (as % H2S04) 1.0 % max. 4. % Insoluble: 0.1 % max. 5. pH shall be less than or equal 2.0 SU
