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So i decided to recalibrate my PH probe and had some difficulty completing the calibration. It would get stuck on Settling on time out. I am using my PC to run the calibration. I spent 4 packets of 7 and 10 solution and finally got it calibrated. However , I believe it is still off. If i stick my probe into a 7 PH solution and it reads 7, then it is correct then?