... Protopopoff and P. Marcus, Potential versus pH (Pourbaix) Diagrams, Corrosion: Fundamentals, Testing, and Protection, Vol 13A, ASM Handbook, ASM International, 2003, p 17–-30 Potential versus pH (Pourbaix) ... secondary reference electrodes that are easier to construct and handle, less sensitive to impurities, and whose potential is very stable and well- known with respect to the SHE (Ref 1). The simpler ... H2(g). Any non-standard reversible hydrogen electrode with well-controlled H+ activity and H2 fugacity can also be used as a reference. The equilibrium potential (Eeq) of a nonstandard reversible...