G504

Reducer for very hard negatives such as over-developed and over-exposed ones. The same as G503, this reducer attacks the highlights first but it has more predictable results. IngredientQuantity Mix chemicals in order. Ammonium persulphate 20 mililiters Sulphuric...

G503

Super-proportional reducer for very hard negatives such as over-developed and over-exposed negatives. This reducers will attack the heavier densities (highlights) first. IngredientQuantity Mix chemicals in order. Ammonium persulphate 40 mililiters Water to make 1...

G502

Reducer for over-developed negatives. IngredientQuantity Mix chemicals in order. Solution A Potassium permanganate4 grams Water to make 1 liter Solution B Sulphuric acid2mililiters Water to make1liter Both Solution A and Solution B keeps well. For use take 100...

G501

Reducer formula suitable for over-exposed and/or over-developed negatives that are fogged or too dense. IngredientQuantity Mix chemicals in order. Solution A Sodium thiosulphate100 grams Water to make 1 liter Solution B Potassium ferricyanide100grams Water to...