| Project | Target | Test Result |
| Content(As Na2S2O5) (≥) | 97.0% | 97.36% |
| SO2 (≥) | 65.0% | 65.91% |
| Iron(Fe) (≤) | 0.002 | 0.0017% |
| As (≤) | 0.0001% | 0.0001% |
| Water Insoluble Matter (≤) | 0.02% | 0.01% |
| PB (≤) | 0.0005% | 0.00048% |
| PH | 4-4.8 | 4.53 |
| Project | Target | Test Result |
| Content(As Na2S2O5), % | ≥96.5 | 97.06 |
| Iron(Fe), % | ≤0.003 | 0.0014 |
| Arsenic (As), % | ≤0.0001 | <0.0001 |
| Heavy Metal (Pb), % | ≤0.0005 | <0.0005 |
| Water-Insoluble, % | ≤0.05 | 0.03 |
(1) In food processing, Sodium Pyrosulfite is used as preservative, bleaching agent and loosening agent. Sodium Pyrosulfite can be used for canned preserves, biscuits, sugar, ice sugar, sugar, candy, glucose, liquid glucose, bamboo shoots, mushrooms and mushrooms.
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