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Photographer's Formulary Windisch Catechol Film Developer , is a catechol-based compensating film developer and produces low to normal contrast negatives, fine grain, and high resolution.
With normal film, it is possible to record a range of 15 stops. Results are similar to and slightly better than those obtained with POTA. In addition, the negatives contain more contrast. A decrease of 0.5 to 1 stop in film speed can be expected.
The chemicals in the kit are used to make two stock solutions. They are diluted 5:3:200 to make the working solution, which is used once then discarded. A 1 liter kit yields 40 liters of working solution.
The shelf life of Solution A is six months, and Solution B has a life of 1 month.
Two packages to make Solution B are included in the kit.