... API 13 BaSO4:85~98% Whiteness 70~95% Water solubles 0.2% max Specification S.G4.2 barite oil drilling grade ... gravity (g/cm2)4.0~4.154.2~4.254.3~4.4Whiteness (%)70~85 %90~95 %95~98 %Moisture (%)0.2 %max0.2~0.01%Fe2O3 ... (g/cm3%)1.0~1.4Density (g/cm3%)2.1~2.7PH value 7.9~8.1 Size: 1) powder : 325 ,400 ... , 1250, 2500, 3000 , 6000 mesh 2) Lump:0~25 cmProduct ...