| Specification | ||
| Test Item | Specification | Test Method |
| Appearance | White powder | Visual |
| Odor | Characteristic | Organoleptic |
| Assay(Ceramides) | Minimum 90% | HPLC |
| Loss on Drying | Max2.0% | CHP2015(0831) |
| Total ash | Max0.5% | CHP2015(0831) |
| Total heavy metal | Max10ppm | AAS |
| Total Plate count ( cfu/g) | Max1000cfu/g | USP34 |