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| Item | Specification | Result |
|---|---|---|
| Appearance | White to off-white powder | White powder |
| Ectoin Content | ≥98% | 99.2% |
| Moisture Content | ≤5% | 3.2% |
| Ash Content | ≤2% | 1.5% |
| pH Value (1% Solution) | 4.5 - 6.5 | 5.2 |
| Solubility | Soluble in water | Soluble in water |
| Heavy Metals | ≤10 ppm | Complies |
| Microbial Limits | ≤1000 CFU/g | <500 CFU/g |