Response to 2 bath processing with normal developers

I don't really get how you intend to convert a single bath developer (like Rodinal) which contains an alkali in its formula to a two-bath one. Two-bath devs do not contain the alkali in the first bath, so no developer activity takes place in the first part of the process. The alkali is contained in the second bath, so it reacts with the developer that is absorbed in the film emulsion and the silver salts are converted to metallic silver. If you use Rodinal as your first bath, the whole process will happen in your first bath and your alkali in the second bath will just use up the remainind Rodinal in the film emulsion to further develop some (eventually) underdeveloped areas of film. The result will not be so much different than if you just left the Rodinal act for a while longer (the only positive difference might be some compensating effect during the development in the second bath). If you succeed to separate the alkali from your developer formula, then you can use it as a first bath for a two bath working chemical. As for the fact that you prefer not using the speed increasing effect with Emofin, try to dilute both of its ingredients with twice the amount of water and develop a normally exposed film through it, I think you will like the results. And the economy, too...

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