I have always made photographic bleach for reduction on prints by adding potassium farricyanide to water. I just got a copy of the darkroom cookbook which suggests adding potassium bromide along with the potassium ferri to a "solution A" and then a solution B including water and hypo.
Is all this necessary? And what is the purpose of adding these to solutions together? Can I continue to get away with a jar of potassium farricyanide and water?
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