| ITEM | STANDARD |
| Assay（HPLC） | Lutein>=90%,20%,10%,5% |
| Appearance | Orange-Red Fine Powder |
| Loss on drying | =<5.0% |
| Mesh Size | 100% pass trough 80 mesh |
| Heavy Metals | =<10ppm |
| Total Bacteria Count | =<1000cfu/g |
| Yeast and Mold | =<100cfu /g |
| Salmonella | Negative |
| E.coil | Negative |