China Pharmaceutical L-Glutathione 99% USP Grade, Find details about China Health Care, Health Food from Pharmaceutical L-Glutathione 99% USP Grade
| Analytical Items | Standard | ||
| Appearance | White crystalline powder | ||
| Identification | Similar with the Reference Spectrum | ||
| Optical Rotation | -15.5°~ -17.5° | ||
| Clearity & color of solution | Clear & Colorless | ||
| Heavy Metals | ≤10ppm | ||
| Pb | ≤3ppm | ||
| As | ≤1ppm | ||
| Cd | ≤1ppm | ||
| Hg | ≤0.1ppm | ||
| Related substances | Total | ≤2.0% | |
| GSSG | ≤1.5% | ||
| Loss on drying | ≤0.5% | ||
| Residue on ignition | ≤0.1% | ||
| Assay | 98.0% - 101.0% | ||
| Microbiology | |||
| Total plate count | ≤1000cfu/g | ||
| Yeast and mold count | ≤100cfu/g | ||
| Total coli forms | ≤100cfu/g | ||
| E. coli | Negative/10g | ||
| S. aureus | Negative/10g | ||
| Salmonella | Negative/10g | ||