Viscidity(mpa. S): 150 or conform to requirement of contract Water Content %: 15 PH: 6.0~8.0 Calcium Content %: / Vitriol Ash Content%: 30~37 Insolubles in water%: 3.0 Transparency (0.5% solution)cm: Conform to rules Heavy Metal %: 0.004 Arsenic Salt %: 0.0002 Lead %: 0.0004 Note: the specs can be adjusted as required. P. P. Woven or craft paper bags with 25KG net each, keep dry.