|
ITEM
|
Standard (B301)
|
Standard (B302)
|
||
|
first-class product
|
Second-class product
|
first-class product
|
Second-class product
|
|
|
Ba+SO4 (as ZnS)%(m/m) ≥
|
99
|
---
|
99
|
---
|
|
Zinc (as ZnS) (m/m)%≥
|
28
|
28
|
28
|
28
|
|
Zinc Oxide %(m/m) ≤
|
0.6
|
0.7
|
0.3
|
0.4
|
|
105°C Volatile%(m/m)≤
|
0.3
|
0.3
|
0.3
|
0.3
|
|
Water Soluble%(m/m) ≤
|
0.4
|
0.5
|
0.4
|
0.5
|
|
Screen residues (63μm mesh) %(m/m) ≤
|
0.1
|
0.1
|
0.1
|
0.1
|
|
Color(compared with standard)
|
Approximation
|
|||
|
Alkalinity of Water extract
|
Neutral
|
|||
|
Oil absorption g/100g ≤
|
14
|
14
|
11
|
11
|
|
Color Killing (Compare with standard) %≥
|
105
|
|||
|
Cover rate (Ratio)
|
Not less than 5% standard plot
|
|||
