This is a clean-working developer of particular value for rapid development or development at high temperatures.
|Hot Water (125F or 52C)||750 ml|
|Sodium Sulfite, anhydrous||25 g|
|Sodium Carbonate, monohydrated||16 g|
|Potassium Bromide||1 g|
|Water to make||1 L|
Do not dilute for use.
Normal developing time – 3 to 4 minutes at 68F (20C).
For development at temperatures higher than 68F, see paragraph on time-temperature coefficients.
From Ansco Formulas for Black and White Film by GAF, 1948 – Formulas are provided for historical reference.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.