| ≥1 piece |
|
Assay(As FeSO4.7H2O)
|
99.5%--104.5%
|
|
Assay(As FeSO4)
|
86.0%--89.0%
|
|
As
|
≤ 0.0003%
≤ 0.0003% |
|
Heavy metals(As Pb)
|
≤ 0.001%
≤ 0.001% |
|
Assay(As Fe)
|
19.7%--20.9%
32.3%--33.6% |