Complaint
| Test Item | Standard | Result |
| Appearance | Colorless or white crystal | Pass test |
| Identification | Pass test | Pass test |
| Clarity and color of solution | Pass test | Pass test |
| Content % | 99.5-100.5 | 99.8 |
| Powder size | 8-80 mesh | Pass test |
| Moisture % | 7.5-9.0 | 8.64 |
| Sulphate ppm | ≤20.0 | <20.0 |
| Oxalic Acid (mg/kg) | ≤20.0 | <20.0 |
| Residue on ignition(Sulphated Ash) % | ≤0.05 | 0.01 |
| Readily carbonisable substances | ≤1.0 | 0.7 |
| Heavy metals ppm | ≤1.0 | <1.0 |
| Lead (mg/kg) | ≤0.5 | <0.5 |
| Arsenic (mg/kg) | ≤1.0 | <1.0 |
| Mercury (mg/kg) | ≤1.0 | <0.1 |
| Aluminium ppm | ≤0.2 | <0.2 |
| Bacterial endotoxins (IU/mg ) | ≤0.5 | <0.5 |
| Isocitric Acid (Relative substances) | Pass test | Pass test |
| Light transmittance % | ≥97.0 | 99.2 |
| Sterility | Pass test | Pass test |
| Barium | Pass test | Pass test |
| Calcium ppm | ≤ 20.0 | < 20.0 |
| APHA(50%W/W) | ≤ 30.0 | 12.0 |
| Chloride ppm | ≤ 5.0 | < 5 0 |
