Ultrasonic cleaning is a very effective cleaning technique. The cleaning effect in an ultrasonic bath is created by means of sending sound waves (invisible to the human eye) through the water containing a cleaning fluid. This creates thousands of tiny air cavitations (bubbles) that collapse due to the sound waves. These implosions result in multiple tiny jets shooting through the cleaning fluid. These jets act like a brush, working the dirt from the items. The result is the ultrasonic cleaning of items that are placed inside the cleaner. This takes place without having to scrub or scour the items and is effective in areas that cannot be reached manually.

Sound waves in a conductive medium
Ultrasonic cleaning is a technique based on the displacement of sound waves in a conductive medium such as a mixture of water and cleaning fluid. When sound is transmitted into a compressible environment such as air, the result is a consistent transfer of sound waves. In fluid, there will only be a consistent transfer if the sound intensity is low.

In an ultrasonic fluid, the sound intensity increases, resulting in negative pressure. This negative pressure breaks up the fluid, creating many thousands of tiny hydrogen cavitations. When these hydrogen cavitations subsequently encounter sound waves, they begin to vibrate. This vibration makes the hydrogen cavitations expand until they become unstable and implode. These implosions create small, but strong, jets in the ultrasonic fluid. Because this does not involve only one, but many thousands of implosions taking place simultaneously, a powerful reaction is created that we call ultrasonic cleaning.

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