| ITEM | STANDARD |
| Appearance | Yellow to Yellowish-Brown Powder |
| Odor | Characteristic |
| Taste | Characteristic |
| Particle size | 95% pass through 80 mesh sieve |
| Loss on drying(3h at 105℃) | ＜5% |
| Ash | ＜5% |
| Acetone | ＜5000ppm |
| Total Heavy Metals | ＜20ppm |
| Lead | ＜2ppm |
| Arsenic | ＜2ppm |
| Silymarin(by UV) | ＞80%(UV) |
| Silybin&Isosilybin | ＞30%(HPLC) |
| Total bacterial count | Max.1000cfu/g |
| Yeast & Mould | Max.100cfu /g |
| Escherichia coli presence | Negative |
| Salmonella | Negative |
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