Replacement of sulfites and tribasic sodium phosphate in photographic formulas

substitute solutions and concentrates

  1. Pixophrenic
    A combination of an alkali metal metabisulfite and an alkali metal hydroxide may be used in lieu of sulfite, such as:

    a) a combination of 0.702 gram of potassium metabisulfite plus 0.355 gram of potassium hydroxide is equivalent to and can...
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