ICP multi-element (26) standard : Ca,Fe,K,Na,Mg @1000ppm, Ag,Al,As,Ba,Be,Cd,Co,Cr,Cu,Mn,Mo,Ni,Pb,Sb,Se,Th,TL,U,V,Zn @10ppm and Sr @100ppm each, in 5%HNO3, Shelf life: 18mths