Similar to Burki and Jenny Cold-Tone and Defender 54-D, this formula produces a more pronounced blue-black on most papers.
CHEMICAL SAFETY
All chemicals are dangerous and must be treated with respect. Read the
chemical warnings on each package. Only one chemical,
metol, used in mixing Developer 130 needs
special attention. Some individuals become sensitized (develop allergic
symptoms or rashes) when using metol. If
this should happen, discontinue use and consult a physician.
MIXING THE STOCK SOLUTION
You will need a 1 liter storage container and a 1000 ml graduated cylinder
for mixing the stock solution. You may find it convenient to use a
proper-sized mixing bowl to mix the stock solution.
STOCK SOLUTION A
| Chemical | Amount | Units |
|---|---|---|
| Water (125°F/52°C) | 750 | ml |
| Metol | 3 | g |
| Sodium sulfite | 45 | g |
| Hydroquinone | 12 | g |
| Sodium carbonate (mono)* | 80 | g |
| Potassium bromide | 2 | g |
| Water to make | 1000 | ml |
*67 g Sodium carbonate (anhy)
Place the warm water in the storage container and add a pinch of sodium sulfite. (A small amount of sodium sulfite will minimize the initial oxidation of the metol. If more is added at this point, the metol will not dissolve). Add the metol to the solution and stir until all of the metol is dissolved. It is important that all of the metol be dissolved before the other chemicals are added. Add the sodium sulfite, stirring until the solid dissolves, Add each chemical in the order given in the table above. Be sure each chemical is completely dissolved before adding the next one to the solution. Finally, add water to the solution to bring its final volume up to size.
LIFE AND CAPACITY OF THE DEVELOPER SOLUTION
The stock solution has a life of more than six months.
USAGE
Dilute 1:1 and develop for 1 minutes at 68°F/20°C. For warmer tones
on bromide papers, dilute 1:3 or 1:4, add 8 ml 10%
potassium bromide for each liter of working solution
and develop for 1½ minutes.
VARIATIONS
Reduce the amount of potassium bromide
and/or substitute 0.2 g of
benzotriazole for every 1.0 g of
potassoium bromide for cooler blue tones.
REFERENCE
Kodak D-72 Print Developer, Photo-Lab-Index, Section 15, Supplement 172, p. 42.