| Test Items | Specification | Test Method | |||
| Appearance | White to off-white powder | Visual | |||
| Moisture | ≤2% | Karl. Fisher method | |||
| Bulk Density | 0.5-0.7g/ml | Average Bulk Density | |||
| pH | 3.0-4.0 | pH meter | |||
| Purity | ≥98% | HPLC | |||
| Ethanol | ≤ 500ppm | GC | |||
| Heavy Metal | |||||
| Lead (Pb) | ≤0.5 ppm | ICP-MS | |||
| Arsenic (As) | ≤0.5 ppm | ICP-MS | |||
| Cadmium (Cd) | ≤0.5 ppm | ICP-MS | |||
| Mercury (Hg) | ≤0.1 ppm | ICP-MS | |||
| Microbiological Tests | |||||
| Total Microbial Count | ≤750CFU/g | AOAC 990.12 | |||
| Mold and Yeast | ≤100CFU/g | AOAC 997.02 | |||
| E. Coli. | Negative/10g | AOAC 991.14 | |||
| Salmonella | Negative/10g | AOAC 998.09 | |||
| Staphylococcus aureus | Negative/10g | AOAC 2003.07 |