What is “degassing” and why is it important?
Degassing is the process of removing small suspended gas bubbles and dissolved gas from a liquid prior to using it as a vehicle for ultrasonic cleaning. Dissolved gas, if not removed, migrates into cavitation bubbles during their formation and prevents them from imploding violently to promote the cleaning effect and gas bubbles absorb ultrasonic energy reducing the sound intensity in the tank. The gas acts to cushion the imploding bubble much like an air bag in a car. Liquids should be degassed by raising the temperature, adding the cleaning chemistry and operating the ultrasonic energy for a period of time ranging from 10 to 30 minutes (depending on the size of the tank and the nature and concentration of the chemicals being used) minimum prior to use. Small bubbles will not be seen rising to the liquid surface during ultrasonic operation in a completely degassed liquid.
