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By certification 
Standard:
|
No. |
ITEM |
STANDARD |
|
1 |
Appearance |
Powder/Flakes/Crystal |
|
2 |
Color |
Shiny Black |
|
3 |
Solubility |
95% |
|
4 |
Humic acid(Dry basis) |
65%min. |
|
5 |
K2O(Dry basis) |
8%, 10%, 12%min. |
|
6 |
Moisture |
15%max |
|
7 |
PH Value |
8-10 |
