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| Inspection Items | Unit | Superior | First Grade | Regular Grade |
| Purity | %≥ | 99.9 | 99.5 | 98.0 |
| B2O3 | %≥ | 56.0 | 56.0 | 55.0 |
| Boron | %≥ | 17.5 | 17.5 | 17.0 |
| Chloride | %≤ | 5ppm | 5ppm | 20ppm |
| Water-insoluble | %≤ | 0.005 | 0.005 | 0.01 |
| Fe | %≤ | 5ppm | ||
| As | %≤ | 2ppm | ||
| Pb | %≤ | 10ppm | ||
| Appearance | White Powder, No Impurities | |||