≥1 piece |
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 | |||
Packing | 25 or 50kg/PE inner or kraft paper or upon request |