Technology

Cavitation

Cavitation is essential for effective performance

The basic principle behind ultrasound combating is the production of the maximum amount of cavitation. This principle is described on page 13 of a literary study performed by the University of Utrecht, called "ultrasound as a method of sterilisation", by Laurens Vehmeijer.

Summary:

"The ultrasonic sound wave places micro-bubbles amongst the water molecules. In certain cycles, these bubbles expand until they reach critical size and implode. These implosions create extremely localised temperatures of up to 5 000 degrees Celsius and pressure waves of up to 2 000 atmosphere. Because liquids are not compressible, this wave will move through the liquid. Micro-organisms caught up in such a powerful pressure wave will be damaged or destroyed. Micro-organisms cannot withstand pressure higher than 100 atmosphere. The effects of this technology on the various micro-organisms are summarised in the conclusions (page 26) of the "ultrasound as a method of sterilisation" literary study. All manufacturers, who allege that cavitation is unnecessary in the combating of micro-organism, are ignoring this basic effect principle."

The effective principle of this method of combating is based on the creation of high-pressure waves by means of cavitation. The number of cavitation bubbles produced is thus a measure of the quality of a transmitter.