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Specifications:
| ITEM | STANDARD | |||
|---|---|---|---|---|
| Ⅰ | Ⅱ | Ⅲ | Ⅳ | |
| Humic acid (dry basis) | 50.0% min | 60.0% min | 70.0% min | 80.0% min |
| Moisture | 15.0% max | 15.0% max | 15.0% max | 15.0% max |
| Solubility | 85.0% min | 90.0% min | 95.0 % min | 100 % |
| K2O | 8.0% min | 10.0% min | 12.0% min | 10.0% min |
| PH Value | 9.0-11.0 | 9.0-11.0 | 9.0-11.0 | 9.0-11.0 |
| Form | Powder/Granule/Pearl/Ball/Flake | |||