Hydrogen
H+
Sodium
Na+
Potassium
K+
Lithium
Li+
Rubidium
Rb+
Caesium
Cs+
Copper (I)
Cu+
Silver (I)
Ag+
ammonium
NH4+
Calcium
Ca 2+
Phosphate
PO4 3-
Carbonate
CO3 2-
Sulphite
SO3 2-
Sulphate
SO4 2-
Hydrogen sulphate
HSO4 -
Hydrogencarbonate
HCO3-
Nitrite
NO2 -
Nitrate
NO3 -
Hydroxide
OH-