UMD 642 is a two chamber, stationary ultrasonic cleaner which offers high cleaning efficiency that is ideal in cleaning surgical tools, hospital equipment (specifically for local sterilizing departments and the likes), and laboratory glassware. It offers highly efficient cleaning of items which are made of glass, metal, plastics and ceramics in hardly accessible locations. It is particularly efficient with two chambers that could carry a volume approximately 50 l each, one for flushing, drying, and dewatering and the other for ultrasonic irrigation. Its microprocessor controller allows it to program bath temperature and the cleaning time and to select an ultrasonic operation mode, either pulse or continuous. Its last programmed settings can be easily stored in the controller for a quick activation of identical processes. Moreover, its current time and bath temperature needed to complete the process is being constantly displayed on its control panel valves. Device is used for switching the air or water operation of its spray gun knobs and also for remote control mechanisms of its relief plugs. Its components are all made of stainless steel.