Certified Reference Material, 20000 mg/L K, 1000 mg/L each of As, Pb, Tl, 500 mg/L Se, 300 mg/L each of Ag, Ba, Cd, Co, Cr, Cu, Ni, V, Zn, 200 mg/L Mn, 100 mg/L each of Be, Hg in HNO3 5%
Certified Reference Material, 100 mg/L each of Cd, Ni, Zn, 60 mg/L Sb, 50 mg/L each of Ba, Be, Co, Cr, Cu, Mn, V, 20 mg/L Ag, 10 mg/L each of As, Tl, 5 mg/L each of Pb, Se in HNO3 5%