We offer high purity copper ingot. Specificationsgrade:4n grade, 99.99% minimum purity 5n grade, 99.999% minimum purity 6n grade, 99.9999% minimum purityhigh purity copper ingotgrade:4n grade, 99.99% minimum purity5n grade, 99.999% minimum purityform:cast ingots100mm200mm. Dimensions:100to200(1.27mm)diameter. The actual required diameter will be specified by purchase order. 4n 5n 6n* 100ppm 10ppm 1ppm gdmsag, al, as, au, b, ba, bi, ca, cd, co, cr, fe, ga, ge, k, li, mg, mn, mo, na, nb, ni, p, pb, sb, si, sn, th, ti, u, v, w, zn, zrna, k.