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