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Item Standard for B301
Ba+SO4 (as ZnS)%(m/m) ≥ 99
Zinc (as ZnS) (m/m)%≥ 28
Zinc Oxide %(m/m) ≤0.6
105℃ Volatile%(m/m)≤ 0.3
Water Soluble%(m/m) ≤ 0.4
Screen residues (63um mesh) %(m/m) ≤ 0.1
Oil absorption g/100g ≤ 14
Color Killing (Compare with standard specimen) %≥105
Item Standard for B311
Ba+SO4 (as ZnS)%(m/m) ≥ 99
Zinc (as ZnS) (m/m)%≥ 30
Zinc Oxide %(m/m) ≤0.3
105℃ Volatile%(m/m)≤ 0.3
Water Soluble%(m/m) ≤ 0.3
Screen residues (63um mesh) %(m/m) ≤ 0.1
Oil absorption g/100g ≤ 10
Color Killing (Compare with standard specimen) %≥105
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