|Hot water (125F or 52 C)||750 ml|
|Sodium Sulfite, anhydrous||36 g|
|Sodium Carbonate, monohydrated||36 g|
|Potassium Bromide||1.8 g|
|Water to make||1 L|
For use, dilute 1 part stock solution with 2 parts water.
Normal developing time, 1 1/2 to 3 minutes at 68F (20C).
From Ansco Formulas for Black and White Film by GAF, 1948 – Formulas are provided for historical reference. They may not work well with modern films and papers. Some of the chemicals can be dangerous. As with all photographic processes, be careful.