Abstract
IT appears to have been generally accepted, in biology at least, that when acid or basic dyes are dissolved in water they do not change the pH of the solvent, except possibly in the case of some dyes, to a negligible degree. It was thought that any slight pH changes which basic dyes might have on the solvent would be to reduce its pH by an insignificant degree.
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References
Gurr, E., Nature, 195, 1199 (1962).
Gurr, E., Nature (in the press).
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GURR, E. pH of Ionic Dye Solutions. Nature 202, 920 (1964). https://doi.org/10.1038/202920a0
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DOI: https://doi.org/10.1038/202920a0
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