Response to Developing an expired Kodak recording

It all depends on the degree of deterioration or fogging. Rodinal is not a bad choice, since it is clear working. "Classic" Rodinal Calbe/Classic/Foma R09 would even be better, since it is clear working without restrainer due to a different formulation (AGFA Rodinal already contains potassium bromide). My suggestion in your case would be to add a "pinch" of benzotriazole to the developer. Benzotriazole gives much better results than potassium bromide if the film is severely fogged. Stick to Rodinal or another clear working formula. You will sacrifice film speed though by adding restrainer. In combination with potassium bromide (as already contained in AGFA Rodinal) benzotriazole may not be as effective as if it were the only restrainer in the developer. Very small quantities of benzotriazole will already work and will not affect the effective speed that much, but you probably will have to extend the developing time beyond what you normally would expect. I cannot give you an exact quantity of benzotriazole to levy your problem.

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