|Hot Water (125F or 52C)||750 ml|
|Potassium Metabisulfite||25 g|
|Potassium Bromide||25 g|
|Water to make||1 L|
|Cold Water||1 L|
|Sodium Hydroxide (Caustic Soda Flakes)*||56 g|
*Sodium Hydroxide may be substituted by Potassium Hydroxide – 50 g.
(Ed. Note – Sodium Hydroxide added to water gets hot. Using cold water is important, and use a container that can take heat – Pyrex is good. Be careful of any splatter.)
Mix equal parts of Solutions 1 and 2 immediately before use.
Develop films not longer than 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From Ansco Formulas for Black and White Film by GAF, 1948 – Formulas are provided for historical reference.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.