| Items | Standard | |
| 20% | 98% 99% | |
| Description | Light yellow or white loose powder | |
| Odor | Should be no odor | |
| Moisture | ≤10% | ≤0.5% |
| Ash | ≤10% | ≤0.1% |
| Assay | ≥20% | ≥98% or ≥99% |
| Items | Specification |
| Appearance | White flowing paticles |
| Assay | ≥ 90% |
| Sieve analysis | ≥ 95% through a USS#20 |
| ≤ 75% through a USS#60 | |
| ≤ 15% through a USS#100 | |
| Loss on Drying | ≤10% |
| Heavy Metal | ≤20ppm |
| Total Plate Count | ≤1000cfu/g |
| Yeast & Mold | ≤100cfu/g |
| E.Coli | Negative |
| Salmonella | Negative |
| Staphylococcus | Negative |