The Bromoil Process
Chemical Formulae
Caution - Safety first!
Photographic chemicals can be dangerous if misused. Never let the chemicals come in contact with the skin.
Recommended precautions:
- when handling the chemicals wear a mask and protective gloves;
- keep the chemicals in clearly labelled jars and bottles;
- never smoke, eat or drink in the darkroom or wherever the chemicals are handled;
- keep everything out of reach of children;
- clean up spillage immediately;
- if you get something in your eyes, wash immediately with plenty of water and seek medical advice immediately.
| Kodak D-163 developer, stock solution: | |||
Metol |
2.3g |
|
|
Sodium Sulphite (anhydrous) |
75.0g |
or Sodium Sulphite (crystals) |
150.0g |
Hydroquinone |
17.0g |
|
|
Sodium Carbonate (anhydrous) |
65.0g |
or Sodium Carbonate (crystals) |
175.0g |
Potassium Bromide |
2.8g |
or Potassium Bromide (10% sol.) |
28ml |
Water to |
1000ml |
|
|
| Hill-Hooper's Bleach / Tan formula, stock solution |
Fixative | ||
Copper Sulphate |
25.0g | Plain Hypo, 10% solution |
|
Potassium Bromide |
25.0g | Sodium Thiosulphate (crystals) | 160.0g |
Potassium Dichromate |
1.25g | to 1000ml (1 litre) water . |
|
Water to 400ml |
|
||
Editor's note:
Ken Hill was Gilbert Hooper’s protégé and developed the bleach that became known as Gilbert’s. The original recipe includes Sulphuric Acid but if the solutions are made with distilled/de-ionised water, the use of acid is not essential and so for reasons of safety it has been deleted from the formula above.
Introduction | How to make a Bromoil Print | Chemical Formulae
