Hi all,
we have ultrasonic cleaned with hot Acetone for years, without knowing
that this liquid has its highest cavity efficiency at -40 Centigrades.
Nor did we realize, that freons are ineffective compared with water
(only 5%). Water with some detergent or tenside addition is seemingly
superiour to most solvents in terms of cavity efficiency.
We have observed, that our Acetone cleaning was not so effective, now we
know why. Of course, you can increase the transducer power, but not all
parts like that.

Just thought someone more liked to see the interesting chart. Asking
Steve to put it on his wall.

Inge

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