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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 | 




