Contrast control print developer
| Stock Solution A |
| Water, 125F/52C | 750 ml |
| Metol | 8 g |
| Sodium Sulfite (anhydrous) | 23 g |
| Sodium Carbonate (monohydrate*) | 23.4 g |
| Potassium Bromide | 1.1 g |
| Cold water to make | 1L |
| * = 20 g Sodium Carbonate (anhydrous) |
| Stock Solution B |
| Water, 125F/52C | 1L |
| Sodium Sulfite (anhydrous) | 23 g |
| Sodium Carbonate (monohydrate*) | 63 g |
| Hydroquinone | 8 g |
| Potassium Bromide | 4.4 g |
| Cold water to make | 1L |
* = 54 g Sodium Carbonate (anhydrous)
Mixing instructions: Add chemicals in specified sequence.
Dilution: Contrast is controlled by varying dilution as follows:
| | ← Lower Contrast Higher Contrast → |
| Beer's No. | #1 | #2 | #3 | #4 | #5 | #6 | #7 |
| Solution A | 8 | 7 | 6 | 5 | 4 | 3 | 2 |
| Solution B | 0 | 1 | 2 | 3 | 4 | 5 | 14 |
| Water | 8 | 8 | 8 | 8 | 8 | 8 | 0 |
Notes: To make working solution divide the final volume of developer required by 16, then multiply this number by the corresponding value in the chart above. Eg. To make 2L of working solution: 2000ml/16 = 125, then multiply 125 by the number listed for the particular Beer's number (contrast) that you require. Eg. for Beer's #6, multiply 125 X 3 = 375ml of Solution A, 125 X 5 = 625ml of Solution B, 125 X 8 = 1000ml, making a total volume of 2L
