Specification | ||
Test Item | Specification | Test Method |
Appearance | White or almost white powder or granule | Visual |
Odor | Odorless | Organoleptic |
PH (0.1% water solution) PH(0.1%) | 5.0 ~ 8.5 | QB/T 4576-2013 |
Glucuronic Acid | Min 45.0% | QB/T 4576-2013 |
Sodium hyaluronate | Min 95% | QB/T 4576-2013 |
Moleculer Weight | 10,000~50,000Da | In-house |
Protein | Max 0.1% | In-house |
Bulk density | 0.1-0.6 g/cm3 | In-house |
Residue on ignition | Max 18.0% | In-house |
Loss on drying | Max 10.0% | QB/T 4576-2013 |
Heavy Metals(as Pb) | Max 20ppm | In-house |
Lead | Max 3ppm | ICP-MS |
Arsenic | Max 2ppm | ICP-MS |
Mercury | Max 0.1ppm | ICP-MS |
Total plate count | Max 100 CFU/g | In-house |
Yeasts &molds& | Max 50 CFU/g | QB/T 4576-2013 |
Escherichia coli | Negative/g | In-house |
Salmonella | Negative/25g | QB/T 4576-2013 |
Pseudomonas aeruginosa | Negative/g | In-house |
Staphylococcus aureus | Negative/g | In-house |