Barium Sulphatefrom 300 mesh to 3000 meshBarium Sulphate---AGradeAppearance White powderBaSO4 97%-98%Whiteness 93%-94%Water soluble chlorides 100PpmWater soluble sulphates 200PpmHeavy metals 3Ppmdensity 4.1-4.5g/mlOil Absorption 15-25Iron (on Fe basis) 0.001%-0.03%Moisture 0.03%-0.05%PH Value 6.0-8.5Water soluble matter 0.2%max