For positive material identification we have a TN Technologies– Metallurgist Pro instrument capable of detecting 21 base elements (Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Z, N, Mo, Ag, Sn, Hf, Ta, W, Au, Pb & Bi). The instrument can check the results of the analysis against its library of elements and alloys and display the most possible result (American Coding).