Ultrasonic cleaning uses ultrasound and is often used to clean delicate equipment. Ultrasound can be used with water or with suitable solvents. The process uses cavitation bubbles which are induced by high frequency pressure waves to agitate the liquid. This agitation causes the fouling to be removed and ensures fouling is removed from all cracks and recesses within the equipment. The major benefit of ultrasonic cleaning is that the equipment can be cleaned without the need for dismantling.