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ID-20 Ilford "Universal" Developer
| Metol | 3 g | |
| Sodium Sulphite (anh) | 50 g | |
| Hydroquinone | 12 g | |
| Sodium Carbonate (anh) | 60 g | |
| Potassium Bromide | 4 g | |
| Water toWater to | 1 litre |
To use: Photographic papers - Dilute 1+ 3 (can be 1+2 or 1+1 for higher contrast)
ID-62 is the modern PQ variant of this
formula
ID-20 was once commercially available in powdered form , and in
the 1950's/60's Ilford sold an ID-20 PQ powdered version.