In summary, we demonstrated the advantages of using a fixed potential scale with a fixed reference rather than the commonly employed overpotential scale. Reaction orders must be determined on a fixed potential scale for assessing the validity of employed mass-transport correction schemes. Moreover, performing analysis of the kinetic currents on a fixed potential scale provides clearer insight into the underlying reaction mechanisms. This approach will be extended in subsequent works to simultaneously capture the influence of both hydrogen pressure and electrolyte pH on the kinetics of the HOR/HER on Pt poly in alkaline electrolyte.