ICP Multi-element (28) Calibration Standard Al,As,Ba,Be,B,Ca,Cd,Cr,Co,Cu,Fe,Pb,Li,Mg,Mn,Mo,Ni,Se,Ag,Na,Sr,Tl,Ti,V,Zn,Sb @100ppm each K @1000ppm and Si @50ppm in 2-5%HNO3 +tr. HF