A.KNO3 B.NaCl C.NaNO3 D.KCl E.Hg2Cl2
A.0.1mg/L B.0.2mg/L C.0.3mg/L D.0.5mg/L E.1.0mg/L
A.0.01mg/L B.0.03mg/L C.0.05mg/L D.0.005mg/L E.0.10mg/L