What elements are in both the CWWTM A and B standards?

Solution A: Al, Ba, B, Cr, Co, Cu, Fe, Pb, Mn, Mo, Ni, Sr, V, Zn, at 0.050 ug/L. Sb, As, Be, Cd, Se, Ag, Tl at 0.01 ug/L. Hg at 0.001 ug/L. Solution B: Contains the same elements in concentrations of 0.200, 0.05 and 0.005 ug/L respectively.

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