Universal and automatic developing tank, designed for the processing of black & white film and color film, including reversal film requiring a second exposure during processing. Tank body manufactured from resistant plastic compounds, impact-resistant, heat-resistant and watertight. Supplied with 2 self-feed multiformat spirals, allowing the simultaneous developing of 2x135, 110 or 126 films, or one film of the 127, 120 or 220 formats. The simultaneous rotating and undulating movements of the spirals, ensure that the chemical solution runs uniformly inside of the tank. Chemical solution requirements are moulded into the tank base. Fits the hand perfectly.