Industrial ultrasonic cleaning systems consist of an ultrasonic generator, a transducer, and a cleaning tank. The generator produces the ultrasonic signal and the transducer changes it to sound waves when it is immersed in the cleaning solution. Cavitation bubbles form in the low-pressure troughs of the sound waves and collapse in the high-pressure peaks. When a bubble collapses next to the surface to be cleaned, it releases a burst of energy that dislodges contaminants from the surface. The cleaning method is completely safe, environmentally friendly, and does not require the use of chemicals. A ten to twenty-minute cleaning time is often enough.