Degasing is a function of dissolving bubbles from liquid.
When a cleaning solution is initially prepared or when it is exposed to air or certain chemicals, it can become saturated with dissolved gases. These gases, such as oxygen or carbon dioxide, can interfere with the efficiency and effectiveness of the ultrasonic cleaning process. The degassing process removes these gases from the liquid, improving the cleaning performance.
In cases where saving time is an essence degas function is of immense help.