Zink powder isotope, purity grade 99, 992%, Qunaitity: 184 kg.Analysis made by Institute fuer Chemische Technologie und Analytik, Vienna, AustriaIsotopic composition:Zn-64....48, 6%Zn-66....27, 9%Zn-67.....4, 1%Zn-68....18, 8%Zn-70......0, 6%Copper 998%. Quantity 245 kgAnalysis composition:Cu-63 69, 1%Cu-65 30, ...