VRP Developer
(concentrated solution)
| | Sodium Sulfite (Anhydrous) | 194g
| | Hydroquinone | 25g | | Potassium Hydroxide | 22g | Methyl Phenidone
| 1.5g
| | Potassium Bromide | 20g | | Potassium Metaborate | 140g | | 1,2,3-Benzotriazole | 0.1g | | Distilled water | to 1litre | | Working solution: 1 part of developer + 6 parts of distilled water. | | Fixer (simple) | | Sodium Thiosulphate Pentahydrate | 300g | | Sodium Disulfite | 20g | | Water | to1L |
| | Fixer with hardening (adds 20% to the strength of the emulsion layer) | | Alum, KAl(SO4)2*12H2O | 15g | | Oxalic acid H2C2O4*2H2O | 7g | | Boric Acid (H3BO3) | 15g | | Sodium Sulfite (Anhydrous) Na2SO3 | 15g | | Ammonium chloride NH4Cl | 50g | | Sodium Thiosulfate Pentahydrate Na2S2O3 *5H2O | 300g | | Hydroxylamine sulfate NH2OH :2SO4 0,5H | 1.5g | | Water (till pH of 4.0±0.3 is achieved) | 1.0L |
| | Stop Bath | | Acetic Acid | 20g | | Water | to 1.0L | | Bleach | Ammonium Dichromate
or
Potassium Dichromate | 7g | | Sulfuric Acid concentrated | 10ml | | Water | to 1.0L | | Brightener | | Sodium Sulfite Anhydrous | 20g | | Water | to 1L |
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