To make the stock solution:
|Hot Water (125F or 52C)||900 ml|
|Sodium Sulfite, anhydrous||14 g|
|Sodium Carbonate, monohydrated||54 g|
|Potassium Bromide||3 g|
|Water to make||1 L|
For use dilute 1 part stock solution with 2 parts water.
Developing time 4 to 5 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From Ansco Formulas for Black and White Film by GAF, 1948 – Formulas are provided for historical reference.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.