| ≥1 piece |
|
Name of index
|
Index
|
|
Appearance
|
White / light yellow powder
|
|
Content %
|
96.0
|
|
Clarity
|
Up to standard
|
|
Loss on drying %
|
3.0
|
|
Sulfate
|
200ppm
|
|
Heavy metals
|
10ppm
|
|
Pb
|
1ppm
|
|
As <
|
1ppm
|
|
Cd <
|
1ppm
|
|
Zn %
|
31-34
|
|
PH value
|
6.0-7.0
|