This counter appears to work well and is fairly accurate. The only problem I have with this meter is that I have to buy a pH calibration powder mix to calibrate it. With my previous meter, the calibration could be adjusted manually with a small screw on the back of the meter while you immersed it in a solution that was already adjusted to a specific pH for calibration purposes. If anyone knows of a way to calibrate this meter using just one or both of the PH 4.0 and PH7.0 solutions please let us all know.
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