Method and device for measuring and controlling the circulation of fluids in endoscope channels. Device includes hermetic chamber having a known volume and a low level and high level sensor to control filling and emptying. The chamber is connected to a filtered air compressor, an injection pump to inject a drying product and a circulation pump to circulate cleaning and disinfecting solutions contained in the tank. The tank can receive at least one endoscope and includes injectors connected by a solenoid valve to the hermetic chamber. The device is used to verify and record the flow of cleaning, disinfecting, rinsing and drying solutions passing through each of the endoscope channels during the cleaning and disinfecting operations.