This toner works well with bromide and chloride papers to produce red tones.
SOLUTION A
| Chemical | Amount | Units |
|---|---|---|
| Potassium Citrate | 100 | g |
| Water to make | 500 | ml |
SOLUTION B
| Chemical | Amount | Units |
|---|---|---|
| Copper Sulfate | 7.5 | g |
| Water to make | 250 | ml |
SOLUTION C
| Chemical | Amount | Units |
|---|---|---|
| Potassium Ferricyanide | 6.5 | g |
| Water to make | 250 | ml |
USAGE
Mix solution B into solution A, then slowly add solution C, stirring well.
Remove prints from toning bath when desired tone is obtained and wash
thoroughly.
NOTE
Before using toning baths it is essential that the prints be well washed.
It will be found that a given formula will not produce an identical tone on
all papers; as a rule the commercial type bromide and chloride papers respond
better to toning than do the more specialized emulsions. The majority of
toning formulas exert a bleaching action in addition to creating the change
of color, and for that reason prints to be toned should be made considerably
deeper than normal.
REFERENCE
Red Toner (GT-15), Photo-Lab-Index, Section 15, Supplement 173, p. 66.
The Darkroom Cookbook,
Stephen G. Anchell, p.167.