Relative counterion selectivity (cations)

Relative counterion selectivity (cations)

Ionselectivity
H+1.0
Li+0.85
Na+1.5
NH4+1.95
K+2.5
Rb+2.6
Cs+2.7
Cu+5.3
Ag+7.6
Mn++2.35
Mg++2.5
Fe++2.55
Zn++2.7
Co++2.8
Cu++2.9
Cd++2.95
Ni++3.0
Ca++3.9
Sr++4.95
Hg++7.2
Pb++7.5
Ba++8.7

For AG 50W-X8 resin (sulfonic acid)