Characteristics: Our Copper cathode 99.9999% are produced from highly homogeneous precursors, which our ... materials in the local environment. GDMS test for our Cu 99.9999%: Chemical composition: Metal Cu content in HPCu - 1 ... is not lower than 99.9999%;Li, Be, B, Na, Mg, AL, Si, P, ... .0001%; HPCu - 2 metal Cu content in no less than 99.999%;Li, Be, B, Na, Mg, AL, Si, P, ...