Delivery time: 4-5 working days after confirmation of your order Package: Packed in fiber drums,each containing 25kgs Quality Standard(Q/YL03-2008)Item NameRequirementsResultsAssay, precent≥99.099.63Sulfate(SO4),Percent≤0.20.04Chloride(Cl),percent≤0.0050.002Chromium(Cr),ppm≤1001Copper (Cu),ppm≤1001Calcium(Ca),ppm≤500155Loss on drying,percent≤0.30.17Sodium(Na),ppm≤10011Potassium(K),ppm≤1002Nickel( ...