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Bob Waters from Fargo, ND asks:
We have Gas Alert Micro 5 and having hard time trying to calibrate the ICO, the message I am getting is gas not detected even with a new tank. I am using a new hose and everything is clear in the hose but still getting this message even after calibrating the other 4 levels. It is just this one that will not calibrate. What am I doing wrong.

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