Proportional: for overdeveloped film
Prepare stock solutions as described below:
Part A
| Water, | 500 ml |
| Potassium Ferricyanide, | 7.5 gr |
| Water, | to make 1000 ml |
Part B
| Water, | 500ml |
| Sodiumthiosulphate (Hypo), | 200 gr |
| Water, | to make 1000 ml |
Use parts A and B separately. Immerse a wet negative in Part A for 1-4 mins, agitating gently. Watch the action carefully and remove the negative as soon as the desired density is achieved. Then immerse in Part B for 5 mins, remove and wash thoroughly.This process may be repeated as required.
For general fogging, dilute Part A with 50\% water. Both solutions have a long shelf life and can be stored for future use.