| Product technical index |
Type I
potassium fulvic acid |
Type II potassium fulvic acid | Type III potassium fulvic acid |
| Appearance | powder | powder | powder |
| Water solubility | ≥98.0% | ≥95.0% | ≥90.0% |
| Humic acid | ≥65.0% | ≥65.0% | ≥65.0% |
| Fulvic acid | ≥45.0% | ≥35.0% | ≥25.0% |
| Potassium oxide | ≥8.0% | ≥10.0% | ≥12.0% |
| Moisture | ≤10.0% | ≤10.0% | ≤15.0% |
| PH value | 7.5-9.5 | 7.5-9.5 | 7.5-9.5 |