| ITEM | STANDARD |
| Resveratrol | >=50.0% |
| Emodin | < 2% |
| Appearance | Brown Powder |
| Odor & Taste | Characteristic |
| Sieve | 100% pass 80 mesh |
| Bulk density | 55-62g/100ml |
| Loose density | 30-50g/100ml |
| Loss on drying | =<5.0% |
| Sulphated Ash | =<2.0% |
| Heavy metals | =<10PPM |
| Mercury | =<0.1 ppm |
| Total plate count | < 1000cfu/g |
| E.Coli | Absent |
| Salmonella | Absent |
| Mould and Yeast | < 100cfu/g |