The Potentiometric Determination of Bromide in the Presence of Chloride in Photographic Developer Solutions

William R. Crowell, Wayne W. Luke, Harlan L. Baumbach

In the present work a potentiometric method of determining bromide in the presence of chloride in developer solutions has been studied. For a given concentration of bromide the error in titration depends upon the ratio of the concentration of the chloride to that of the bromide and is materially affected by the presence of developer solution constituents. Percentage correction curves are shown which can be applied to bromide titrations in the various solutions at different concentration ratios of chloride to bromide including those bromide concentrations common in developer solution analysis. A method of analysis more rapid than any mentioned in the literature and which is now used in a leading West Coast motion picture laboratory is described.

Print ISSN
Published
1945-06
Content type
Original Research
DOI
10.5594/J14243