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| Index | National Standard |
|---|---|
| Ammonium dihydrogen phosphate (%) | 98 |
| As (%) | 0.0005 |
| PH | 4.0-4.5 |
| Water-insoluble (%) | 0.003 |
| Heavy metal (%) | 0.003 |
| K (%) | 0.003 |
| Fe (%) | 0.0005 |
| Chlorid (%) | 0.00025 |
| Sulfur compound (%) | 0.0025 |
| Nitrate (%) | 0.001 |
| Clarity test | Qualified |