Step | Preparation | Notes |
1. First | Ilford Bromophen 1:1 | Develop for 12 minutes at 68° F |
Development | or Ilford universal paper developer 1:15 | 5 second inversion every 15 seconds. |
Add 12 g of sodium thiosulfate (hypo) per litre | Tap tank gently to dislodge air bells. | |
of working strength developer for 100 ISO films | ||
or 8 g per litre for 50 ISO films | Save used developer for step 8. | |
2. First Wash | Fresh water at 68° F. Fill and invert 5 times | |
using the standard rinse procedure. | ||
3. Bleaching | Solution A: potassium permanganate 2g/500mL | 5 minutes of bleaching with continuous agitation |
Solution B: sulfuric acid 10 mL conc + 490 mL | Vigorous agitation is desirable. | |
water | (10g potassium dichromate in 1L water plus | |
Mix equal parts of A and B prior to bleaching. | 10 mL sulfuric acid is an alternative bleach) | |
4. Second | Fresh water at 68° F. Fill and invert 5 times | |
Wash | using the standard rinse procedure. | |
5. Clearing | Add 25g sodium (or potassium) metabisulfite to | 2 minutes |
enough water to make a 1 litre solution | (4 inversions per 5 seconds) | |
(for dichromate bleach use 50g of anhydrous | ||
sodium sulfite in 1L of water) | ||
6. Third | Fresh water at 68° F. Fill and invert 5 times | |
Wash | using the standard rinse procedure. | |
7. Film | Open developing tank | Expose to light for about 30 seconds |
Exposure | Carefully unwind film from reel. | away from 100W bulb. Time not critical |
After exposure | wind film back on reel and place | |
in developing tank. | ||
8. Second | Use same developer as in step 1. | Time is not critical. |
Development | or | use fresh developer with no hypo added to |
improve shadow regions | ||
9. Fourth | Fresh water at 68° F. Fill and invert 5 times | |
Wash | using the standard rinse procedure. | |
10. Fixing | Optional step. Use any available fixer. | Use a standard fixing technique and time for the |
available fixer being used. | ||
11. Fifth | Wash thoroughly | |
Wash | discarding water periodically. | |
12. Wetting | 1 or 2 drops Photoflo per 500 mL distilled water | 30 second immersion. Tap tank to remove air bells. |
agent | ||
13. Drying | Air dry overnight. Do not squeegee film. | |
Emulsion is very soft when wet. | ||
Cut and mount dried slides. |
Step 1: First Development Step 2: First Wash Step 3: Bleaching Step 4: Second Wash Step 5: Clearing Step 6: Third Wash Step 7: Film Exposure Step 8: Second Development Step 9: Fourth Wash Step 10. Fixing Step 11: Fifth Wash Step 12: Wetting agent Step 13: Drying |