Voluntary standards: GB/T1707-1995
Item Standard -----------------B301----------B311
Ba+SO4 (as ZnS)%(m/m)--------Min 99--------99
Zinc (as ZnS) (m/m)%----------Min 28--------30
Zinc Oxide %(m/m)-------------Max 0.6-------0.3
105 Degree Volatile%(m/m)-------Max0.3-----0.3
Water Soluble%(m/m)-------------Max 0.4-----0.3
Screen residues(63um mesh)%(m/m)--Max0.1---0.1
Oil absorption g/100g-------------Max14------10
Color Killing
Compare with standard specimen)----%Min105--105

Properties: White powder
Packing: Plastic weaving bag with polyethylene liner or paper bag, 50kg or 25kg per ba