It is re-confirmed that the binding capacity of Ag⁺ ions runs straight to the photographic antifogging action on the 5-benzylidenerhodanines and benzimidazoles also.
In order to investigate the antifogging action of the organic compounds, silver potentiometric titration must be performed under known pH and good-conductive medium and ripening temperature.
There is a great difference between an ordinary condition in emulsion and conditions which were adopted by Solov'ev and Smirnova as in the 90% or 10% ethanol solution
Silver potentiometric titration is one of the most effective methods of study on the organic compounds for photography, because one can investigate the antifogging or fogging capacity, and reaction ratio to Ag⁺ ions, functional radicals (SH), and functional body structures (pyrimidine or thiazolidine etc.) and molecular weight from this method.

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