This developer is recommended for Process film used in reproduction work.
Solution 1
| Hot Water (125F or 52C) | 750 ml |
| Hydroquinone | 25 g |
| Potassium Metabisulfite | 25 g |
| Potassium Bromide | 25 g |
| Water to make | 1 L |
Solution 2
| 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From Ansco Formulas for Black and White Film by GAF, 1948 – Formulas are provided for historical reference.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.
