Abstract: An article for enabling determination of corrosion m a structure which is located in an environment and is subject to corrosion in the environment. The article comprises a cathodic protection reference cell. The cathodic protection reference cell is able to be located in the environment at a location different from the location of the structure in the environment, and is able to be electrically coupled to the structure. The cathodic protection reference cell comprises a housing, and a reference electrode located in the housing. The reference electrode is able to be electrically connected to the structure which is located in the environment, to form a reference electrode-structure circuit. The reference electrode functions as an electrochemical cell, which enables measurement of the voltage drop which represents the structure-to-environment potential, for enabling the determination of the extent of cathodic protection of the structure.