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Silicon lumps, 99.997%
| Impurities content (weight %) | |
|---|---|
| Silver (Ag) | <0.00002 |
| Aluminum (Al) | <0.00001 |
| Arsenic (As) | <0.00004 |
| Calcium (Ca) | <0.00005 |
| Copper (Cu) | <0.00001 |
| Phosphorus (P) | <0.0003 |
| Strontium (Sr2+) | <0.0000001 |
| Titanium (Ti) | <0.0001 |
| Zinc (Zn) | <0.000005 |
| Nitrogen + Oxygen + Carbon (N+C+O) | <0.001 |



