The use of saturated ammonium chloride in the elimination of contact potentials

C.N. Murray, S.F. Acree
1931 Bureau of Standards Journal of Research  
In the electrometric measurement of the concentrations of various ions in plant extracts and other organic mixtures the potential of the junction between two electrode liquids is a source of error unless this contact potential is calculated, measured, or eliminated. The study of various concentrations of ammonium chloride up to saturated (5.66 N) gives a practical method for annulling the contact potential to within ± 1.0 m .v.
doi:10.6028/jres.007.043 fatcat:cr27schitbakzfvov4aepknehu