Formulary Windisch Modified Catechol Film Developer

Photographer's Formulary Windisch Modified Pyrocatechin is designed to work with slow speed film and gives extremely fine grain, high resolution and normal contrast.

Catechol is a tanning/staining developer that produces with negatives having a brownish with a slight dark look. The staining hardens the emulsion, prevents reticulation, but does not affect the printing quality of the negative.

An alkaline fixer solution such as TF-4 is recommended for achieving maximum pyro stain on the negative. A conventional rapid fix may diminish staining effects of pyro and PMK formula.

Makes 1 liter of each stock solution. To make a working solution, use 1 part stock solution and add 3 parts water.