|
|
|
Solution A
|
|
|
Water at 125° F
|
500 ml
|
|
Sodium sulphite
|
36.5 g
|
|
Boric acid crystals
|
9.4 g
|
|
Hydroquinone
|
28 g
|
|
Potassium bromide
|
2 g
|
|
Water to make
|
1 litre
|
|
Solution B
|
|
|
Water at 90 ° F
|
500 ml
|
|
Sodium bisulphite*
|
11 g
|
|
Sodium sulphite
|
1 g
|
|
Paraformaldehyde
|
37.5 g
|
|
Water to make
|
1 litre
|
|
Mix solutions with good ventilation. Mix 4 parts A + 1 part B for use. 82.5 millilitres of acetone may be substituted for the paraformaldehyde.
|
Defender 15-D
|
|
Solution A
|
|
|
Water at 125° F (52° C)
|
500 cc
|
|
Hydroquinone
|
45 g
|
|
Sodium sulfite, desiccated
|
30 g
|
|
Sulfuric acid, concentrated
|
4 cc
|
|
Cold water to make
|
1 liter
|
|
Solution B
|
|
|
Water at 125° F (52° C)
|
500 cc
|
|
Sodium carbonate, desiccated
|
30 g
|
|
Potassium carbonate
|
90 g
|
|
Potassium bromide
|
8.3 g
|
|
Sodium sulfite, desiccated
|
90 g
|
|
Add cold water to make
|
1 liter
|
|
Mix 1+1 for use.
|
Kodak D-9
|
|
Solution A
|
|
|
Water at 125° F (52° C)
|
500 ml
|
|
Sodium bisulfite*
|
22.5 g
|
|
Hydroquinone
|
22.5 g
|
|
Potassium bromide
|
22.5 g
|
|
Cold water to make
|
1 liter
|
|
Solution B
|
|
|
Cold water
|
1 liter
|
|
Sodium hydroxide*
|
52.5 g
|
|
*Add the hydroxide to the cold water very slowly to prevent the solution from boiling. Mix 1:1 for use.
|
Dupont LD-1
|
|
Water at 90° F (32° C)
|
500 cc
|
|
Sodium sulfite, desiccated
|
30 g
|
|
Paraformaldehyde
|
7.5 g
|
|
Potassium metabisulfite
|
2.5 g
|
|
Boric acid crystals
|
7.5 g
|
|
Hydroquinone
|
22.5 g
|
|
Potassium bromide
|
1.5 g
|
|
Cold water to make
|
1 liter
|
|
Use full strength at 68° F. 16.5 ml of acetone may be used in place of the paraformaldehyde.
|
Dupont LD-2
|
|
Water at 90° F (32° C)
|
500 cc
|
|
Sodium sulfite, desiccated
|
30 g
|
|
Hydroquinone
|
26 g
|
|
Sodium carbonate, monohydrate
|
60 g
|
|
Potassium metabisulfite
|
10 g
|
|
Potassium bromide
|
4 g
|
|
Cold water to make
|
1 liter
|
|
Use full strength at 68° F.
|
Chemco Developer
|
|
Solution A
|
|
|
Water at 125° F (52° C)
|
500 ml
|
|
Hydroquinone
|
135 g
|
|
Potassium formaldehyde
|
110 g
|
|
Diethylene glycol
|
118 ml
|
|
Ethylenediamine
|
0.26 g
|
|
Potassium hydroxide (45%)
|
2.8 ml
|
|
Cold water to make
|
1 liter
|
|
Solution B
|
|
|
Water at 125° F (52° C)
|
750 ml
|
|
Sodium hydroxide
|
9.5 g
|
|
Potassium bromide
|
1.57 g
|
|
Potassium formaldehyde
|
63 g
|
|
Boric acid
|
13.5 g
|
|
Cold water to make
|
1 liter
|
|
Mix 1+1+4 parts water for use.
|
Ansco 79b
|
|
Solution 1
|
|
|
Water at 90° F (32° C)
|
750 ml
|
|
Sodium sulfite, desiccated
|
1 g
|
|
Paraformaldehyde
|
30 g
|
|
Potassium metabisulfite
|
10.5 g
|
|
Cold water to make
|
1 liter
|
|
Solution 2
|
|
|
Water at 125° F (52° C)
|
750 ml
|
|
Sodium sulfite, desiccated
|
120 g
|
|
Boric acid crystals
|
30 g
|
|
Hydroquinone
|
90 g
|
|
Potassium bromide
|
6 g
|
|
Cold water to make
|
3 liters
|
|
Mix 1+3 for use. 66 ml of acetone may be substituted for the paraformaldehyde.
|
Ansco 70
|
|
Solution 1
|
|
|
Water at 125° F (52° C)
|
750 cc
|
|
Hydroquinone
|
25 g
|
|
Potassium metabisulfite
|
25 g
|
|
Potassium bromide
|
25 g
|
|
Cold water to make
|
1 liter
|
|
Solution 2
|
|
|
Cold water
|
1 liter
|
|
Sodium hydroxide*
|
36 g
|
|
or Potassium hydroxide*
|
50 g
|
Mix equal parts of solutions 1 and 2 immediately before use.
* Cold water should always be used when dissolving sodium or potassium hydroxide because considerable heat is
involved. If hot water is used, the solution will boil with violence and may cause serious burns.
|
Ansco 81
|
|
Water at 125° F (52° C)
|
750 cc
|
|
Hydroquinone
|
35 g
|
|
Sodium sulfite, desiccated
|
55 g
|
|
Sodium carbonate, monohydrated
|
80 g
|
|
Citric acid
|
5.5 g
|
|
Potassium bromide
|
10 g
|
|
Cold water to make
|
1 liter
|
|
Do not dilute for use.
|
Times given here are for line work with film.
For paper development these developers should be diluted from 4 to 10 times more than for film,
depending on the developer.
Formaldehyde is carcinogenic. Handle with adequate ventilation, or substitute acetone.