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Photographers' Formulary Potassium Bromide - 1 Lb.

B&H # PHPBLBX MFR # 10-0930 1LB
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Synonyms Bromide
Bromide of potash
Bromide of potassium
Bromide salt of potassium
Appearance White, deliquescent, granular powder
Odorless
Uses Fog preventer and restrainer in developing solutions
Ingredient in intensifying, reducing, toning, and many other photographic solutions
Chemical Formula KBr
Notes Potassium bromide is the most commonly used restrainer in developing formulas, especially those using hydroquinone, pyrocatechin, or pyrogallol. The addition of potassium bromide usually results in a reduction of contrast and can have a warming effect on image tone when used in paper developers
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