Standard hydrogen electrode (SHE) (E = 0.000 V) activity of H+ = 1 Molar Normal hydrogen electrode (NHE) (E ≈ 0.000 V) concentration H+ = 1 Molar Reversible hydrogen electrode (RHE) (E = 0.000 V - 0.0591 × pH) Saturated calomel electrode (SCE) (E = +0.241 V saturated) Copper-copper(II) sulfate electrode (CSE) (E = +0.314 V) Silver chloride electrode (E = +0.197 V in saturated KCl) Silver chloride electrode (E = +0.210 V in 3.0 mol KCl/kg) Silver chloride electrode (E = +0.22249 V in 3.0 mol KCl/L)[2] pH-electrode (in case of pH buffered solutions, see buffer solution) Palladium-hydrogen electrode Dynamic hydrogen electrode (DHE) Mercury-mercurous sulfate electrode (E = +0.64 V in sat'd K2SO4, E = +0.68 V in 0.5 M H2SO4) (MSE)