|
Parameters
|
Standards
|
|
Total phosphate, as P2O5
|
≥68%
|
|
Inactive phosphate, as P2O5
|
≤7.5%
|
|
Iron, as Fe %≤
|
≤0.05%
|
|
pH value (1% solution)
|
5.8-7.3
|
|
Solubility
|
Qualified
|
|
Heavy metals, as Pb
|
-
|
|
Arsenic, as As
|
-
|
|
Fluoride as F
|
-
|
|
Water insoluble matter
|
≤0.05%
|
