This formula is a universal developer for all projection and contact papers. It gives rich black tomes with excellent brilliance and detail. Ansco 130 provides unusual latitude in development and is clean-working even with long developing times.
|Hot Water (125F or 52C)||750 ml|
|Sodium Solfite, anhydrous||50 g|
|Sodium Carbonate, monohydrated||78 g|
|Potassium Bromide||5.5 g|
|Water to make||1 L|
The prepared soick solution is clear but slightly colored. The coloration in this case does not indicate the developer has deteriorated or is unfit for use.
For use, dilute 1 part stock solution with 1 part water.
Normal developing time at 68F (20C) for Brovira, 2 to 6 minutes, for Convira, Cykon, Cykora and Indiatone, 1 1/2 to 3 minutes.
Greater contrast can be obtained by using the developer stocker solution full strength. Softer results can be obtained by dilution 1 part stock solution with 2 parts water.
(Ed. Note – While the papers mentioned are long gone, this developer still works well with modern papers. Most folks mix it, then dilute 1:1 and store that as their working solution. Many report it keeping nearly a year in glass bottles. Thus, it’s very economical. Also. Some folks use it diluterd 1:10 or so as a film developer.)
From Ansco Formulas for Black and White Film by GAF, 1948 – Formulas are provided for historical reference. They may not work well with modern films and papers. Some of the chemicals can be dangerous. As with all photographic processes, be careful.