Demineralization of Photographic Wash Water by Ion Exchange
An ion exchange system has been developed to purify photographic wash water and allow its re-use. The effluent from a print-washing machine is cycled through a cation and then an anion exchange resin bed, and returned to the machine. The purity of the water obtained approaches that of distilled water. — This unit was developed for the United States Signal Corps, to be used in mobile photographic units, and is designed to reduce the amount of water required for print-washing. This process is applicable not only to circumstances where water is scarce, but also to processes where wash-water purity and temperature control are important, as in color photography.
- Print ISSN
- 0097-5834
- Published
- 1949-08
- Content type
- Original Research
- DOI
- 10.5594/J16516
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