Response to Pyrocatechin

Pyrocatechin doesn't stain if the developer contains a normal amount of Sodium sulfite. I have only tried Mimosa No. 3, a modified version with 10% Sodium hydroxide as Part B instead of Carbonate. It works good with the films I have tried it with. Efke and Tri-X, plus I got normal contrast with Maco Ort 25 and lith film by diluting the developer more. If you can't find so much information about Catechol developers, do some experiments yourself. Very exciting. :-)

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