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It seems to me that the Uaser will create a standing wave. This is similar to what you see in a "normal" mode ultrasonic cleaner. This creates dead spots in the solution which are not affected by cavitation and ultrasonics. Examples of three mode ultrasonic cleaners can be found on my web site http://www.tovatech.com/ultrasonic_cleaner_lp.html Tovatech has ultrasonic cleaners that work in normal mode which induces mixing. The standing wave has dead spots which need to be filled in and cause a mixing effect in the liquid. The Uaser is an interesting application of ultasonics.

BoB Sandor