| Item | Specification | Results | |
| Characters | Yellow and brown powder,slight characteristic smell | ||
| Identification | Positive Reaction | Complies | |
| Clarity and Color of solution | 1% methanol solution clarity | Complies | |
| Heavy Metals | Max. 10ppm | Complies | |
| Sulphate Ash | Max. 0.5% | Complies | |
| Loss on Drying (2 hours 130℃) | Max. 3.0% | 2.8% | |
| HPLC | 30-65% | 51.5% | |
| Silybin | 40-65% | 57.5% | |
| Isosilybin | 10-20% | 11.9% | |
| Silychristine&Silydianine | 20-40% | 30.7% | |
| UV | ≥80% | Complies | |
| Residual organic solvents | (1)Total | Max.0.3% | Complies |
| (2)Acetone | Max.0.2990% | Complies | |
| (3)Other | Max.0.0010% | Complies | |
| Microbiological test | (1)Total Bacteria | Max.1000/g | Complies |
| (2)Moulds | Max.100/g | Complies | |
| (3)Yeasts | Max.100/g | Complies | |
| (4)Salmonella | N.D | N.D | |
| (5)Staphylococcus Aureus | N.D | N.D | |