 
								
| NO. | ITEM | STANDARD SPECIFICATION | |||
| 1 | Boron ≥% | 4N | 5N | 6N | |
| 99.99 | 99.999 | 99.9999 | |||
| 2 | Impurity PPMwt Max Each | Ag/Au | 0.30 | - | Available Upon Request | 
| Fe | 11.0 | 8.0 | |||
| Mg | 0.01 | 0.9 | |||
| Pb | 0.20 | 0.1 | |||
| Sn | 0.30 | 0.1 | |||
| Ca/Zn/Ni | 0.20 | - | |||
| Mn | 7.00 | 0.1 | |||
| Cu | 0.10 | - | |||
| Total | 100ppm | 10ppm | 1ppm | ||
| 3 | Size | Powder or lump | |||
| 4 | Packing | 1kg in polyethylene bottle, carton box outside | |||