SILVER/SILVER-CHLORIDE ELECTRODE

"A commonly used reference electrode. The electrode assembly consists of a silver metal electrode in contact with solid silver chloride (usually as a coating on the silver metal) immersed in an aqueous chloride salt solution saturated with silver chloride. All these are contained in a small vessel, typically made of glass tubing. The internal electrolyte of the reference electrode assembly and the external electrolyte into which the whole assembly is immersed are in ionic contact through a separator. A typical separator is a small porous ceramic plug sealed into the end of the glass tubing. "