A free-standing, cabinet mounted, single stainless steel chamber (minimum size 10X24X12), ultrasonic cleaner. The cleaning unit includes the following minimum features: power lid, automatic detergent injector, automatic level controls, automatic timer, and switch fill and drain controls. Sonic cleaning energy provided to the chamber by transducers which are powered by a solid-state generator(s) at a frequency of 40 kHz. Designed for use in surgery reprocessing areas, central processing departments and laboratories to clean surgical instruments and other hardware with sonic energy.