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Those 42KHz ultrasonic cleaners are on sale again (free ship in USA too)


Jkay

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Awesome. Do you use a 50/50 mixture or some other mix?

I read a review of this unit written by a lab technician, and the tech said they used a half and half mix so I tried it, and it works fine. The black dirt clouds that vibrate out of the joints of a metal watch bracelet are very satisfying to watch.

This piece has a 3 minute self-timer, so I always run it 3 or 4 times in a row.

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