abstract an instrument reprocessor for cleaning, disinfecting, and / or sterilizing a medical instrument is disclosed. to reprocess instruments having one or more channels defined therein, the reprocessor can include one or more flow control systems configured to control a flow of fluid through each channel. In various embodiments, a flow control system can include a differential pressure sensor and a proportional valve for controlling the fluid flow in a channel. the reprocessor can also include, one, a fluid circulation pump which can be configured to supply the flow control systems with fluid and, two, a system for controlling the pressure of the fluid supplied to the flow control systems. the reprocessor can also include a system for supplying a metered amount of fluid to the fluid circulation system. the system can include a reservoir having a fluid height sensor to monitor the amount of fluid therein and a pump configured to supply the reservoir with fluid. ********************************* Translation of the Summary Patent Summary: "Instrument reprocessor and methods of reprocessing instrument". The present invention relates to an instrument reprocessor for cleaning, disinfecting and / or sterilizing a medical instrument. To reprocess instruments having one or more channels defined therein, the reprocessor may include one or more flow control systems configured to control a flow of fluid through each channel. In various embodiments, a flow control system may include a differential pressure sensor and a proportional valve to control fluid flow in the channel. The reprocessor may also include, one, a fluid circulation pump that may be configured to provide fluid flow control systems and, two, a system for controlling the pressure of fluid provided to flow control systems. The reprocessor may also include a system for supplying a metered amount of fluid to the fluid circulation system. The system may include a reservoir having a fluid height sensor for controlli