08/03/2007, 01:32 AM
Lost power for a bit and my PH reading dropped to 2.something last night. I figured no big deal I just need to recalibrate. Tried to recalibrate and when I select the low value and the number never rises. It's at 0002 and never moves. It's not the probe either because I have another from a PH Pen and changing it out. It had no effect on the calibration or steady PH 7.0 reading. What to do?