Potassium bromide - chemical used as a restrainer in most developing solutions and as a rehalogenizing agent in bleaches.
Potassium carbonate - highly soluble alkaline accelerator used in most general purpose and print developing solutions.
Potassium bromide Learning Objective: Identify different types of black-and-white developers and their uses. 8-13. In the development stage of film processing, what areas of the negative are converted to black metallic silver first? 1. Highlights 2.
For the second developer, use Solarol, diluted 1:1, in each liter of which 36 grams of potassium bromide or 31 grams of sodium bromide is dissolved. With this second developer, the final second image (i.e.
oxalate development, the developer is made in one of two ways-(1) by saturating a saturated solution of neutral potassium oxalate with ferrous oxalate, and adding an equal volume of a solution (10 grains to 1 oz. of water) of potassium bromide to ...
Simultaneously the restrainer helps control excessive contrast. Potassium bromide is a common restrainer. PreservativeOne final additive is sodium sulfide, which slows the oxidation of the developer, increasing its shelf life as a stock solution.
Potassium bromide - P
Potassium carbonate - P
Potassium chloride - P
Potassium citrate - P
Potassium dichromate - P
Potassium ferricyanide - P
Potassium hydroxide caustic potash - P
Potassium iodide - P
Potassium metabisulfite - P ...
 See also: Bromide, Image, Silver, Time, Film
  
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