CHARACTERS WHITE,CRYSTALLINE ,COLORLESS CRYSTALS OR GRANULES IDENTIFICATION COMPLIES WITH THE TEST CLARIY AND COLOUR COMPLIES WITH THE TEST ASSAY 99.50-101.0% MOISTURE 7.5-9.0% SULPHATED ASH ≤0.1% READILY CARBONISABLE SUBSTANCES NOT DEEPER THAN STANDARD HEAVY METALS ≤10PPM SULPHATES ≤150PPM ALUMINIUM ≤0.2PPM SULPHATES ≤350PPM BACTERIAL ENDOTOXINS ≤0.51IU/mg