| Item | Specification | Result | |
| Characters | Yellow powder | Conforms | |
| Identification | A: Thin-layer chromatography | Conforms | |
| B: As description EP7 | Conforms | ||
| C: Reaction of chlorides | Conforms | ||
| PH | 2.3-3.3 | 2.46 | |
| Water | ≤2.0% | 0.50% | |
| Specific rotation | -235°to -250° | -246° | |
| Sulphated ash | ≤0.5% | 0.14% | |
| Absorbance | 460nm ≤0.40 | 0.246 | |
| Related substances | 4-Epichlortetracycline≤4.0% | 1.74% | |
| Total of other impurities≤1.0% | 0.44% | ||
| Heavy metals (Lead-Pb) | ≤50ppm | ＜50ppm | |
| Arsenic (As) | ≤2ppm | ＜2ppm | |
| TC.HCL (on dried basis) | ≤8.0% | 4.89% | |
| CTC.HCL (on dried basis) | ≥89.5% | 91.46% | |
| TC.HCL+CTC.HCL (on dried basis) | 94.5-102.0% | 96.35% | |