 
								
| Commodity | Standard Specification | |||
| Purity | Impurity (ICP-MS or GDMS Test Report, PPM Max each) | |||
| Zone-Refined Germanium | 5N | 99.999% | Fe/Pb 0.1, Cu/Ni/Co 0.2, As 0.5, Al 1.0 | Total ≤10 | 
| 6N | 99.9999% | Cu/In/Al 0.01, Ca/Zn 0.15, As/Fe/Mg 0.1, Ni/Pb/Si/Co 0.02 | Total ≤1.0 | |
| Size | 26x21x23mm ( 1-2kg bar ) | |||
| Resistivity | ≥50ohm-cm (23+/-0.5°C) | |||
| Packing | 1kg in plastic bag, carton box outside | |||