I have a BRS ORP probe about 3 months old, it was reading around 400 on average with the RK and now switching it over to the Apex it is reading about 80. (from 50, two days ago and now 80)
Does the 2 week settle in period need to happen again before I think something is wrong with it?
Stupid question: Why doesn't Apex allow for the common calibration solution to be used and calibrated by?
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