ICP-OES Water Test Kit analyzing 45 elements with exceptional accuracy down to the parts per billion. The kit includes tubes for collecting the water sample, a sample return package, and a prepaid label to send your samples to the lab. We test for the following chemical elements: Ag, Al, As, B, Ba, Be, Bi, Br, Ca, Cd, Ce, Cl, Co, Cr, Cs, Cu, Fe, Ga, Hg, I, In, K, La, Li, Mg, Mn, Mo, Na, Ni, P, Pb, Rb, S, Sb, Se, Si, Sn, Sr, Th, Ti, Tl, U, V, W, Zn.