First Developer |
|
|
Metol |
2 g |
|
Sodium Sulphite (anh) |
50 g |
|
Hydroquinone |
8 g |
|
Sodium Carbonate (anh) |
60 g |
|
Potassium Bromide |
5 g |
|
Potassium Thiocyanate |
5 g |
|
Water to |
1 litre |
|
|
|
|
Bleach Bath |
|
|
Water |
750ml |
|
Potassium Dichromate |
5 g |
|
Sulphuric acid (conc) - see note |
10 ml |
ADD THE SULPHURIC ACID DROP BY DROP TO THE 750ml WITH CARE. |
Water to |
1 litre |
|
|
|
|
Clearing Bath |
|
|
Sodium Sulphite (anhyd) |
20 g |
|
Sodium Hydroxide |
0.8 g |
|
Water to |
1 litre |
|
|
|
|
Second Development |
|
|
Metol |
2 g |
|
Sodium Sulphite (anhyd) |
60 g |
|
Hydroquinone |
4 g |
|
Sodium Carbonate (anhyd |
40 g |
|
Potassium Bromide |
1 g |
|
Water to |
1 litre |
|
|
|
|
|
|
|
First Developer |
20°C (68°F) 8-10 mins fast films, 6-9 mins for slower fine
grain films |
|
Wash |
5 mins |
|
Reversal Bath |
5 - 7 minutes |
|
Wash |
1 - 2 minutes |
|
Clearing Bath |
2 -3 minutes |
|
Re-exposure |
Expose to 100 watt bulb for 5-10 minutes at 5ft/1.5 metres |
|
Second Development |
Stop development when desired density is reached |
|
Wash |
Rinse |
|
Fixer |
Fix in normal acid fixing bath. |
|
Wash |
30 mins |
|
|
|
|
British Journal Photographic Almanac 1947 |
|
|