Sophora Japonica Extract (Quercetin 95%)
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 Characteristics
Analysis Item | Specification | Result |
Appearance | Light yellow to yellow green granules | Complies |
Solubility | Practically insoluble in water | Complies |
Soluble in alkaline solution | Soluble in aqueous alkaline sol | Complies |
Loss on Drying | ≤12.0% | 7.81% |
Ash | ≤0.5% | 0.10% |
Loose Density | 0.100–0.700 g/ml | 0.5505 g/ml |
Tapped Density | 0.200–0.800 g/ml | 0.6193 g/ml |
Particle Size ≥20 mesh | ≥95% | 99.34% |
Particle Size ≥40 mesh | ≥15% | 22.33% |
Particle Size ≥60 mesh | ≥10% | 16.51% |
Chemical Characteristics
Analysis Item | Specification | Result |
Heavy Metals | ≤10 ppm | Complies |
Arsenic (As) | ≤2 ppm | 0.274 ppm |
Lead (Pb) | ≤2 ppm | 0.588 ppm |
Cadmium (Cd) | ≤1 ppm | <0.05 ppm |
Mercury (Hg) | ≤0.1 ppm | <0.05 ppm |
Solvent Residual | ≤5000 ppm | Complies |
Assay (Quercetin, dried basis) | ≥95.0% | 99.7% |
Microbiological Tests
Analysis Item | Specification | Result |
Total Plate Count | ≤1000 CFU/g | <10 CFU/g |
Yeast | ≤100 CFU/g | <10 CFU/g |
Mould | ≤100 CFU/g | <10 CFU/g |
Coliforms | ≤0.92 MPN/g | Negative |
Salmonella | Not detectable | Negative |
Packaging: 25kg/drum with two food grade poly bags inside
Storage: Seal and store in a cool and dry place, avoiding direct sunlight
Shelf Life: Three years when properly stored