Ilford pyro-soda developer for plates or films.
| 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.
| 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 |