1MT of Copper Powder is stored in a Bonded Warehouse in Germany. Chemical Purity: 99.9994% (Based on the determined impurities Al, Cd, Fe,Mg, Mo, Ni, Sb, Ti, Zn) Isotopic composition: Cu63: 69.1% and Cu65: 30.9% +- 0.05% SKR and Certificate of Analysis available.