For a stock solution of 700ml without replenishment
Powder for stock solution
Active developing compound Ortho- Phenylene Diamine, suitable for slow and medium speed films.
Ultra Fine Grain type developer.
Over-expose your films (+1F stop). After the fixer you have to remove the solarisation layer by a 2-3% Acetic Acid solution (standard Stop bath) and a very fine grain negative is the result. Original formulae Hans Windisch 1941.