Quote Originally Posted by Michael R 1974 View Post
I'm confused about the Phenidone/Sulfite part. Would this be mixed in a solvent like TEA that does not readily transfer Oxygen? Otherwise wouldn't a Phenidone-Sulfite-Water solution be pretty short-lived/unstable? I'm thinking of POTA for example.
Yes, this would be water-based ready-to-use developer like D-76 or XTOL, except that some Vitamin C would be added just before use. And Phenidone is subject to hydrolysis, so I'm hoping that Dimezone S will last longer.