|
Item
|
Test standard
|
Test result
|
|
|
ZnS04.7H20
|
92.71% Min
|
97.41%
|
|
|
Zn
|
21% Min
|
22.06%
|
|
|
Pb
|
0.002% Max
|
0.001%
|
|
|
Cd
|
0.002% Max
|
0.0004%
|
|
|
Cr
|
___
|
0.0006%
|
|
|
As
|
0.002% Max
|
0.00004%
|
|
|
Hg
|
__
|
0.000001%
|
|
MSN : xiaxiaoxia521521
Yahoo:xiaxiaoxia521521
skope:xiaxiaoxia-521521
Tel: eight six --five three two--eight nine zero four one zero five zero
Fax: eight six --five three two --eight nine zero four one zero nine zero