Pyro film developer
| Stock Solution A |
| Water | 750 ml |
| Sodium Bisulfite or Potassium Metabisulfite | 9.6 g |
| Pyro | 60 g |
| Potassium Bromide | 1.1 g |
| Cold water to make | 1L |
| Stock Solution B |
| Water | 750 ml |
| Sodium Sulfite (anhydrous) | 105 g |
| Cold water to make | 1L |
| Stock Solution C |
| Water | 750 ml |
| Sodium Carbonate (monohydrate*) | 75 g |
| Cold water to make | 1L |
* = 64 g Sodium Carbonate (anhydrous)
Mixing instructions: Add chemicals in specified sequence.
Dilution: 1+1+1+11
Starting point development time: 10-12 mins.
