EWL Formula 19

Tanning developer for color separation positives (dye-tone process). IngredientQuantity Sodium sulphite anhydrous50grams Pyrocatechin20grams Sodium carbonate anhydrous100grams Potassium bromide4grams Water to make1liter Mix chemicals in order. Dilute 1:5 and develop...

EWL Formula 7 (non-staining pyro)

Pyrogallol developer with a very small tendency for staining. IngredientQuantity Solution A Potassium metabisulphite15grams Pyrogallol15grams Sodium sulphite60grams Water to make1liter Solution B Sodium carbonate monohydrate75grams Water to make 1 liter Mix chemicals...

EWL Formula 6 (Acetone Pyro)

Variation of a pyro developer with acetone. IngredientQuantity Potassium metabisulphite3.3grams Pyrogallol60grams Sodium sulphite anhydrous150grams Water to make1liter Mix chemicals in order. For tank use, mix 12.5 mililiters stock solution with 0.58 liters of water...

EWL Formula 5 (Pyro Metol)

Staining developer made from Pyrogallol and Metol. IngredientQuantity Solution A Potassium metabisulphite7.5grams Pyrogallol30grams Metol7.5grams Potassium bromide4.2grams Water to make1liter Solution B Sodium sulphite anhydrous150grams Water to make 1 liter Solution...

EWL Formula 4 (Pyro soda)

Classic pyro developer. IngredientQuantity Solution A Potassium metabisulphite9.8grams Pyrogallol60grams Potassium bromide1.1grams Water to make1liter Solution B Sodium sulphite anhydrous105grams Water to make 1 liter Solution C Sodium carbonate monohydrate75grams...