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C-41 Formulae

Developer

Chemical

Amount

Water

800 ml

Potassium Carbonate

38 g

Sodium Sulfite

4.7 g

Potassium Bromide

1.5 g

Hydroylamine Sulfate

3.9 g

CD4

5.9 g

Potassium Iodide

 1 mg

Acetic acid to pH

pH 10.0

Water to make

1 liter

 

Bleach

Chemical

Amount

Water

700 ml

Ferric Ammonium EDTA (~50% solution – sold as Kodak BL-1)

170 ml

Ammonium Bromide

172 g

Potassium Nitrate

54 g

Acetic Acid (99%)

~15 ml

Water to make

1 liter

pH

5.8

 

Fixer

Chemical

Amount

Water

700 ml

Ammonium Thiosulfate

189 ml

Sodium EDTA

1.5g

Sodium Bisulfate

15 g

Water to make

1 liter

pH

6.5

 

Stabilizer

Chemical

Amount

Water

800 ml

Formaldehyde (37%)

5 ml

Photoflo 600

1.6 ml

Water to make

1 liter

 

“BLIX formula #1”

Chemical

Amount

Water

800 ml

Sodium Sulfite

10 g

Ferric Sodium EDTA

60 g

Sodium Thiosulfate

150 g

Potassium Iodide

0.5 g

Ammonium Chloride

10 g

Photoflo 600

1.6 ml

Water to make

1 liter

 

“BLIX formula #2”

Chemical

Amount

Water

800 ml

Sodium Sulfite

10 g

Ferric Ammonium EDTA

160 ml

Ammonium Thiosulfate

160 ml

Potassium Iodide

0.5g

Photoflo 600

1.6 ml

Water to make

1 liter

 
         The process at 100F would look like:
 
Chemical
Time
Developer
3.25 minutes
Bleach
6.5 minutes
Rinse
3 - 4 minutes
Fixer
6 - 7 minutes
Rinse
3 - 4 minutes
Stabilizer
1 - 2 minutes
Dry
 

 
         If using “BLIX” instead of separate bleaching and fixing, the second, third, and fourth steps above may be combined to a single 7 minute “BLIX” step.