Device and method for cleaning and/or disinfecting endoscopes

For the purpose of cleaning and/or disinfecting endoscopes having a plurality of channels, each channel is connected to a feedline, which is provided with a shut-off valve, for a cleaning and/or disinfecting agent, and each channel is flushed with a cleaning and/or disinfecting agent. If necessary, before flushing the channels, separating means are arranged in the endoscope in order to separate channels from one another, in such a manner that during flushing only single channels are present in the endoscope. Each single channel is connected to a feedline for a cleaning and/or disinfecting agent and is flushed separately. The single channels which merge in the endoscope into a common channel part are flushed one after the other. Advantageously, if single channels of mutually different passage width are flushed simultaneously, an additional flow restriction is arranged in at least the feedline connected to the channel with the greater passage width.