We have tested it and I suspect the issues have 1 of 3 origins, first, the sensor is only one change, the circuit board is also brand new and is firmware based now, we can actually set the switching points and update them and get operational data, I don't yet have that ability in the US but they can do it at the factory, they will get the data from your old one and find out what exactly was the issue. Secondly, we know that oils greatly affect the sensor the sensor can take a couple minutes to recover from a heavy coat of oils and this greatly attracts bubbles. We have run so many tests on this that we have log times of clean hands, after eating McDonalds French Fries, etc, and also when new the sensor has a waxy film from the molding process. The old ones did too. I strongly suspect you will find it far less sensitive to bubbles after just a week or so of operation. Third, we changed from polyurethane to seal it to epoxy and now we are back to polyurethane. The epoxy was more bubble prone, the polyurethane is more difficult to work with but more reliably bubble free. Unfortunately, there are always some unintended consequences to progress but we added a lot of new things to the osmolator this year, you can now adjust the pump flow rate and no longer need a screwdriver to attach the pump.
