| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | Yellow-gray or light yellow-green fine powder or granules | Meets requirements |
| Identification | To pass test | Passes test |
| Loss on drying | 6.5%~10.0% | 9.4% |
| Chloride | ≤0.07% | 0.04% |
| Sulfate | ≤0.1% | 0.03% |
| Mercury | ≤3ppm | ＜3ppm |
| Oxalic acid | Meet requirement | Meets requirement |
| Arsenic | ≤3ppm | 1.1ppm |
| Lead | ≤10ppm | ＜10ppm |
| Ferric iron | ≤2.0% | 0.90% |
| Reducing sugars | No red precipitate(in a min.) | Meets requirements |
| Organic volatile impurities | Meets requirements | Meets requirements |
| Assay | 97.0%~102.0% | 99.8% |
| Ferrous (as Dihydrate) | 11.24%~11.81% | 11.56% |
| Particle size | Through 70 mesh | 90% |
| Conclusion: The Product Conforms to USP/FCC/BP. |
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