Clarity and color of solution: Clear and colorless____ Loss on drying: Not more than 12.0%____ Residue on ignition: Not more than 0.1%____ Sulphate: Not more than 0.1%____ Heavy metals: Less than 0.001%____ Iron: Less than 0.001%____ Creatinine: Not more than 300ppm____ Total plate count: Less than 1000cfu/g____ E-Coli: Negative____ Assay; Not less than 99.0%