ICP Multi-element (28) Standard:Al,As,Ba,Bi,Ca,Cd,Co,Cr,Cu,Fe,Ga,Mg,Mn,Mo,Nb,Ni,P,Pb,Sb,Se,Si,Sn,Sr,Ti,V,W,Zn,Zr at 100ppm each, in 2-5%HNO3 + trace HF