L-Histidine
Miasto: LV, Marupe
Please avoid sudden changes in temperature and humidity, as they may affect the condition of derivative ingredients and tablets.
The shelf life begins from the date of manufacture at the factory.
Taking into account logistical and transportation stages, the remaining shelf life of the product is always shorter than the full shelf life.
We ship products to our customers with a remaining shelf life of no less than 70%.
Physical & Chemical Characteristics
Analysis Item | Specification | Result |
Appearance | White to slightly yellow crystal or crystalline powder | Conforms |
Assay | ≥98.5% | 99.8% |
pH | 7.0–8.5 | 7.86 |
Specific Rotation | +12.6°–+14.0° | +12.8° |
Loss on Drying | ≤0.2% | 0.10% |
Residue on Ignition | ≤0.4% | 0.11% |
Chloride | ≤0.05% | <0.05% |
Sulfate | ≤0.03% | <0.03% |
Iron | ≤30 ppm | <30 ppm |
Heavy Metals
Analysis Item | Specification | Result |
Heavy Metal (as Lead) | ≤15 mg/kg | Conform |
Lead | ≤3 ppm | <3 ppm |
Arsenic | ≤1 ppm | <1 ppm |
Cadmium | ≤1 ppm | <1 ppm |
Mercury | ≤0.1 ppm | <0.1 ppm |
Microbiological Tests
Analysis Item | Specification | Result |
Total Plate Count | ≤1000 CFU/g | <1000 CFU/g |
Yeast and Mold | ≤100 CFU/g | <100 CFU/g |
E. coli | Negative/10 g | Conforms |
Salmonella | Negative/10 g | Conforms |