All statistical data included is representative of the characteristics of each lot that has undergone manufactured and shipped from nanoshel llc united states . This is to certify that the enclosed material has been tested and complies with specification. Silicon wafer 6 inch by nanoshel. Product code ns6130, 10, 1082 diameter mm 6 152. 4mm Single-sided polished phosphorous-doped type n type crystals with a thickness of 250 or 500 microns and resistivity of 1 or 10 ohm-cm, Produced using the CZ method 12% oxygen levels with 12. 5 and 16. 5% carbon concentrations ppma 1 features purity eco, Friendliness accurate composition specification stock no. Product description ns6130, 10, 1082 silicon wafers 6 n type