L-Serine
City: 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 |
Description | White crystals or crystalline powder | Conforms |
Identification (IR) | Concordant with the reference spectrum | Conforms |
Assay | 98.5% – 101.5% | 100.1% |
Specific rotation [α]D25 | +14.0° ~ +15.6° | +15.1° |
Chloride (Cl) | <0.05% | <0.05% |
Sulfate (SO4) | <0.03% | <0.03% |
Iron (Fe) | <30 ppm | <30 ppm |
Insoluble foreign matter in amino acids | No fibers longer than 5 mm are present, total weight of any foreign matter ≤ NMT 5 mg/100 g of sample | Conforms |
Related Compounds | Individual impurity <0.5%, Total impurities ≤ 2.0% | Conforms |
Loss on Drying | <0.20% | 0.12% |
Residue on Ignition | <0.10% | 0.02% |
Heavy Metals
Analysis Item | Specification | Result |
Heavy metals (Pb) | <15 ppm | <15 ppm |
Arsenic | <1.5 ppm | <1.5 ppm |
Lead | <5 ppm | <5 ppm |
Microbiological Tests
Analysis Item | Specification | Result |
Total Plate Count | ≤1000 CFU/g | Conforms |
Yeast and Molds | ≤100 CFU/g | Conforms |
Conclusion: Passed test according to the Standard of USP43 & FCC12.