| Home
| Photography Home | Formulae
|
ID-62 Ilford "Universal" PQ Developer
| Phenidone | 0.5 g | |
| Sodium Sulphite (anh) | 50 g | |
| Hydroquinone | 12 g | |
| Sodium Carbonate (anh) | 60 g | |
| Potassium Bromide | 2 g | |
| Benzotriazole 1% soln | 20 ml | |
| Water to | 1 litre |
To use: Photographic papers - Dilute 1+ 3 (can be 1+2 or 1+1 for higher contrast)
Forte 203 which was recommended for Polywarmtone is
ID-62 without Benzotriazole (a PQ version of and gives slightly warmer results,
Ilfords's Warm tone version of ID-62 is ID-78
ID-62 can be made up as a more concentrated stock solution
and keeps well with an excellent shelf life. It is similar to PFP an Ilford powder developer.
The formula is similar to Ilford PQ Universal which is
more concentrated and uses Potassium Carbonate & Sodium Hydroxide
in place of the Sodium Carbonate to improve solubility.
Concentrated Stock Solution ID-62
| Phenidone | 1.25 g | 6.25 g | |
| Sodium Sulphite (anh) | 125 g | 625 g | |
| Hydroquinone | 30 g | 150 g | |
| Sodium Carbonate (anh) | 150 g | 750 g | The concentrated version is best made up using |
| Potassium Bromide | 5 g | 25 g | Potassium Carbonate & Sodium or Potassium Hydroxide |
| Benzotriazole 1% soln | 50 ml | 250 ml (or 2.5 g) | amounts will be added shortly |
| Water to | 1 litre | 5 litres | |
| To use: Photographic Papers - Dilute 1+9 (1+4 for higher contrast) | |||
| See also: Alternatives to Ilford Cooltone, Warmtone | |||