Why must water be degassed each time the ultrasonic cleaner's tank is changed?

Degassing water before using it in an ultrasonic cleaner is crucial because excess bubbles can significantly reduce the effectiveness of the cavitation process. During ultrasonic cleaning, high-frequency sound waves create microscopic bubbles in the liquid. These bubbles are vital for the cleaning process, as they collapse and produce powerful shock waves that help dislodge contaminants from instruments and surfaces.

When water is not degassed, pre-existing bubbles can interfere with the formation of these necessary cavitation bubbles. This interference not only impairs the cleaning efficiency but can also lead to inadequate removal of debris and contaminants on instruments. Therefore, ensuring that the water is degassed allows for optimal cavitation to take place, leading to better cleaning outcomes.

Maintaining water temperature or preventing chemical reactions are important aspects of the cleaning process, but they are not directly related to the need for degassing. Additionally, proper sterilization involves more than just cleaning; it requires specific methods and protocols that differ from the process of simply using an ultrasonic cleaner. Thus, focusing on the cavitation process clearly underscores the necessity of degassing the water in the ultrasonic cleaner's tank.