Test  Project	Standard index value
Antholeucin & BaSO4 % (m/m) ≥	99
ZnO% (m/m) ≤	0.3
105°C Volatile%  (m/m) ≤	0.3
Water soluble %  (m/m) ≤	0.3
Sieve residue (63μm mesh)% (m / m) ≤	0.1
Color (compare with standard sample)	Excel
Alkali of the water extract	Neutral
Oil absorption (g/100g) ≤	10
Color power consumption (with standard sample)% ≥	105
Conceal ability (contrast ratio)	Not Lower than 5% standard