Ultrasonic Cleaning Baths and Tanks. https://www.bjultrasonic.com/category/ultrasonic-cleaning-system/ An ultrasonic cleaner is a cleaning device that uses ultrasound (usually from 20–400 kHz) and an appropriate cleaning solvent (sometimes ordinary tap water) to clean delicate items. The  ultrasound can be used with just water, but use of a solvent appropriate for the item to be cleaned and the