How much bromide does paper release?

Discussion in 'B&W: Film, Paper, Chemistry' started by Athiril, Aug 12, 2012.

  1. Athiril

    Athiril Subscriber

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    Per 8x10 or other unit i can work out into area, does anyone have a ball park figure? I ask because I want to play around with making print replenishing recipe, I know some people will say why bother etc, its just because I want to. The replenisher having less bromide in it compensate is the idea.

    I know papers will be different, so any will do or just even the typical ilford multigrade thats so common.
     
  2. RPC

    RPC Member

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    Why not just start your recipe with no bromide, and see how that works. Then just add it as needed.
     
  3. Ian Grant

    Ian Grant Subscriber

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    If you know the coating weight of Silver per square meter it's relatively easy to work out. Agfa used to publish figures. 1 gm/sq meter is a good starting point.

    Ilford did a lot of work on bromide content of developers in the 1950's, Metol based devs are very sensistive to increased bromide Phenidone types very much less so.

    With a paper developer Bromide build up will have a greater affect with warm-tone papers, the more bromide the greater the potential warmth of the tones.

    Ian
     
  4. Gerald C Koch

    Gerald C Koch Subscriber

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    Both Ethol LPD and Ryuji's DS-14 are self-replenished. A separate replenisher was not deemed necessary.