Until recently both the Clark and the Weston cells have served as standard sources of electromotive force. Both of these consist of an amalgam of a metal as the anode covered by a saturated solution of the sulphate of the metal and this in conjunction with mercury and mercurous sulphate which serves as the cathode.
Proceedings of the Iowa Academy of Science
©1915 Iowa Academy of Science, Inc.
Huong, Dieu Ung and Pearce, J. N.
"A Convenient Standard Cell,"
Proceedings of the Iowa Academy of Science, 22(1), 169-174.
Available at: https://scholarworks.uni.edu/pias/vol22/iss1/23