1000 ppm Ca, Fe, K, Mg, Na, Sr; 10 ppm Ag, Al, As, Ba, Be, Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb, Sb, Se, Tl, V, Zn, Th, U Matrix: 5% HNO3 Min: >= 9.95 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility