Review on π± Hydroponic Household Drinking Resolution Measurement by Peter Tennant
Calibration is confusing
Calibration not working. I do the last step 9.18. After pressing cal for 5 seconds, it stops. No quick press option. Now my tap water is in the 9.xx range. and stuck at that level. How can I reset the settings to factory defaults?
- pH meter
- Not sure
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