| Analysis Items | Specifications | Methods |
| Identifications |
- IR
| IR spectrum is concordant with spectrum of Glutathione RS. |
- Solubility
| Freely soluble in water, very slightly soluble in ethanol and in methylene chloride. |
| Physical Tests |
| Appearance | White crystalline powder | Visual |
| Taste & smell | Sour taste | Organoleptic |
| Specific Rotation | -15.5°~-17.5° | USP43<781S> |
| Bulk density | 0.30-0.65g/mL | USP43<616> |
| Loss on drying | ≤0.50% | USP43<731> |
| Residue on Ignition | ≤0.10% | USP43<281> |
| Active Ingredients Tests |
| Glutathione Purity (HPLC) | 98.00%-101.00% | USP43<621> |
| Total impurities | ≤2.00% | USP43<621> |
| Chemical Tests |
| Heavy Metals | ≤10.00ppm | USP43<231> |
| Pb | ≤1.00ppm | USP43<211> |
| As | ≤2.00ppm | USP43<251> |
| Cd | ≤0.10ppm | USP43<232> |
| Hg | ≤1.00ppm | USP43<261> |
| Residue of Iron | ≤10.00ppm | USP43<241> |
| Residue of Chloride | ≤200ppm | USP43<221> |
| Residue of Sulfate | ≤300ppm | USP43<221> |
| Microbiological Tests |
| Total Bacterial Counts | ≤1,000cfu/g | USP43<2021> |
| Yeasts and Molds | ≤100cfu/g | USP43<2021> |
| E. Coli | Negative in 1g | USP43<2022> |
| Salmonella | Negative in 10g | USP43<2022> |
| Staphylococcus aureus | Negative in 1g | USP43<2022> |
| * Conclusion: Conform to above specifications. |
| * Statements : Irradiated free, GMO free, Additives free. |
| * Packaging: 1/5kg per bag or 25kg per fiber drum. |
| * Storage Condition: Preserve in well-closed, tight containers with temperature below 25℃. |
| * Shelf Life: 3 years when properly stored. |
