Ilford pyro-soda developer for plates or films.

Stock solution
IngredientQuantity
Mix chemicals in order.
Pyrogallic acid25grams
Potassium metabisulfite6grams
Water to make0.25liters

The potassium metabisulfite should be first dissolved in the water previous to adding the pyro.

Working Solutions
IngredientQuantity
Mix chemicals in order.
Solution A
Stock solution50mililiters
Water to make0.5liters
Solution B
Sodium carbonate crystalline50grams
Sodium sulfite crystalline50grams
Potassium bromide 10% solution6mililiters
Water to make0.5liters