ICP Multi-element (33) Standard, Mg, Sr, Ba, Ti, Zr, U, Hf, V, Nb,Mo, W,Co, Ni, Pb, Pt, Zn, cd, Sn, Pd, Sb, Bi, Se, Th, Nd, Gd, Tb, Dy, Ca, Cr, Mn, Fe, Cu, Al., 1 g/L each, (divided into 3 – 5 bottles)