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| Item | Specifications |
| Purity % | ≥99.9 |
| Water content % | ≤50×10⁻⁴ |
| Acidity (as HF), ppm | ≤5 |
| Non-volatile residue % | ≤0.001 |
| Suspended matter or sediment | None visible |
| F-ion, ppm | ≤0.01 |
| Cl-ion, ppm | ≤0.02 |