Part A | ||
Potassium Carbonate | 20 | g |
Sodium Bicarbonate | 1.5 | g |
Sodium Sulfite | 25 | g |
Sodium Metabisulphite | 12 | g |
Water to make | 1000 | ml |
Part B | ||
Sodium L-ascorbate | 1.3 | g |
Phenidone | 0.1 | g |
Mixing Instructions: Add chemicals in specified sequence. |
Dilution: Dilute Part A 1+9 to make 1000 ml then add Part B. |
Usage: |
Notes This formula is slightly unusual because you need to make Part A and dilute it 1+9 to make 1000 ml working solution then before use you need to dissolve the chemicals listed in Part B into the 1000 ml of working solution.This formula was released for public use by Geoffrey Crawley in an article published in Amateur Photographer on 13 Sept 2008. |