Staining developer made from Pyrogallol and Metol.
| Ingredient | Quantity | |
|---|---|---|
| Solution A | ||
| Potassium metabisulphite | 7.5 | grams |
| Pyrogallol | 30 | grams |
| Metol | 7.5 | grams |
| Potassium bromide | 4.2 | grams |
| Water to make | 1 | liter |
| Solution B | ||
| Sodium sulphite anhydrous | 150 | grams |
| Water to make | 1 | liter |
| Solution C | ||
| Sodium carbonate monohydrate | 75 | grams |
| Water to make | 1 | liter |
| Mix chemicals in order. | ||
For tank use dilute 1:1:1:13 (sic!) and develop for 12–18 minutes at 18.5°C. For tray use dilute 1:1:1:8 and develop for 5–8 minutes at 18.5°C.
As a rule, contrast and density may be increased by decreasing the recommended amount of water to dilute the stock solution by 50%–66%. Softer negatives can be obtained by using 50%–100% more water than is specified for normal results.