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ID-67 Ilford PQ Developer
| Phenidone | 0.25 g | |
| Sodium Sulphite (anh) | 75 g | |
| Hydroquinone | 8 g | |
| Sodium Carbonate (anh) | 37.5 g | |
| Potassium Bromide | 2 g | |
| Benzotriazole 1% soln | 15 ml | |
| Water toWater to | 1 litre |
To use: Films - Dilute 1+2 to 1+5
ID-67 can be made up as a more concentrated stock solution
and keeps well with an excellent shelf life.
ID-2 is the earlier MQ version of this formula.
Concentrated Stock Solution ID-67
| Phenidone | 0.625 g | 3.125 g | |
| Sodium Sulphite (anh) | 187.5 g | 625 g | |
| Hydroquinone | 20 g | 100 g | |
| Sodium Carbonate (anh) | 93.8 g | 468.75 g | |
| Potassium Bromide | 5 g | 25 g | |
| Benzotriazole 1% soln | 37.5 ml | 187.5 ml (or 1.88g) | |
| Water to | 1 litre | 5 litres |
To use: Films - Dilute 1+5 to 1+14