The best thing you can do for your pcb when using an ultrasonic cleaner is to provide variable frequencies and waves.
Ultrasonic cleaner pcb flux.
I assume someone in the marketing department at an ultrasonic cleaner manufacturer started this nonsense with a well meaning sales pitch and chaos has.
An ultrasonic cleaner can vibrate throughout the board and remove smaller particles of flux left behind that a cleaner may not be able to get.
Here are a few things to keep in mind when considering an ultrasonic cleaner.
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Elmasonic 800 0102 elma tec clean a1 ultrasonic cleaner solution concentrate for electronics and optics powerful cleaning fluid for industrial use.
Ultrasonic is the wrong way to clean pcb s.
Flux remover and pcb ultrasonic cleaner solution 1 litre cleaning fluid.