Foma Retro Special is a two-component (not two-bath) film developer designed for the manual processing of black and white negative films, especially the Foma Retropan 320 Soft film. It can also be used to develop other sorts of black and white roll or sheet films.
The content of the smaller package and the larger package is dissolved in 700ml of warm water (40°C) and then the solution is filled up with water to the final volume of one liter.
One package of the powder developer is designed for one liter of working solution and is sufficient to develop 1,3 sqm of film material or the following amount of sheet films: 25 sheets of 8x10 inches, 50 sheets of 5x7 inches, 100 sheets of 4x5 inches; further e.g. 36m of perforated film of a width of 35mm equal to 25 pcs of 135-36 film.
Fomapan Retropan 320 is developed in the Retro Special developer at 20 °C, developing time 4 to 5 minutes.