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Ilford pyro-soda developer for plates or films.

Stock solution
Ingredient Quantity
Mix chemicals in order.
Pyrogallic acid 25 grams
Potassium metabisulfite 6 grams
Water to make 0.25 liters

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

Working Solutions
Ingredient Quantity
Mix chemicals in order.
Solution A
Stock solution 50 mililiters
Water to make 0.5 liters
Solution B
Sodium carbonate crystalline 50 grams
Sodium sulfite crystalline 50 grams
Potassium bromide 10% solution 6 mililiters
Water to make 0.5 liters