Appearance: White crystalline powder pH (5%,W/V): 2.1-2.6 Clarity of solution: BY7max Copper salt: 0.0005%max Heavy metals: 0.001%max Ferrite: 0.0002%max Oxalate: 0.2%max Sulphated ash: 0.1%max Assay: 99.0-100.5% Organic vol. impurities: pass Packing: 20kgs net cardboard drum