Pyro film developer
| Stock Solution A |
| Water | 750 ml |
| Sodium Bisulfite | 9.8 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*) | 85 g |
| Cold water to make | 1L |
* = 73 g Sodium Carbonate (anhydrous)
Mixing instructions: Add chemicals in specified sequence. Stock solutions keep well, but working solution should be used immediately after dilution.
Dilution: 1+1+1+7 (tray) 1+1+1+11 (tank)
Starting point development time: 6 - 8 mins (tray), 9 - 12 mins (tank)
