No

Test Item

Technical specification (%)

Analysis  Results

(%)

1

Purity

99.5

99.8

2

Mg

9.7

9.8

3

S

12.5

12.9

4

Chloride

0.02

0.014

5

Iron

0.001

0.0003

6

Water   insoluble substance

0.05

0.01

7

As

0.0002

0.0001

8

Heavy metal

0.001

0.0008

9

PH

7

6.5

10

Look

White crystalline substance

White crystalline substance

Conclusion

First Quality