... 99.999%. The total content of Ag, Al, As, Cd, Cu, Fe, Mg, Ni, Pb, S, Si, Sn, Tl, & Zn is ... Indium is above 99.9999%. The total content of Cd, Cu, Fe, Mg, Pb, S, Si & Sn is bellow 1 ppm ... is above 99.99999%. The total content of Ag, Cd, Cu, Fe, Mg, Ni, Pb & Zn is bellow 0.1 ppm ...