and 275 °C, which reproduces the data in the table above: The extrapolation to 300 °C gives . Farmer gives the following correction for the potential of the silver chloride electrode with 0.1 mol/kg KCl solution between 25 and 275 °C, accounting for the activity of Cl− at the elevated temperature: See also Reference electrode Saturated calomel electrode Standard hydrogen electrode Copper-copper(II) sulfate electrode Cathodic protection Electromyography (especially electrodes used for surface EMG) For use in soil they are usually manufactured with saturated potassium chloride electrolyte, but can be used with lower concentrations such as 1 M potassium chloride. In seawater or chlorinated potable water they are usually directly immersed with no separate electrolyte. As noted above, changing the electrolyte concentration changes the electrode potential. Silver chloride is slightly soluble in strong potassium chloride solutions, so it is sometimes recommended that the potassium chloride be saturated with silver chloride. References External links NACE International Website for Corrosion Professionals Electrodes ja:基準電極#銀－塩化銀電極