What is Ultrasonic cleaning?

The range of the human ear (depending on age) is about 16 Hertz to 16 kilo Hertz, Middle C is 216 Hertz, a grasshopper call around 7 kilo Hertz and a bat signal about 70 kilo Hertz.  Beyond human audible range is called ‘ultrasonic’  An ultrasonic cleaner functions by containing an electronic ‘generator’ which develops a high frequency power.  The power is supplied to a piezo ceramic transducer which send sound waves into the tank.  These sound waves create millions of microscopic bubbles which collapse or implode releasing large amounts of energy and literally suck the contamination from the surface of the item being cleaned.  This process is called ‘cavitation’