Review on CityFarmer Digital pH Meter for Hydroponic Nutrient Solution Testing, with 2 Pack Calibration Solution Mixture, Accurate & Reliable Results, Built-in ATC by John Martin
Incorrectly calibrated
Not very accurate - I liked the idea that this calibration could be done with a screwdriver as calibration can be a little tricky for other gauges. I went and bought some distilled water and did a calibration and despite everything it's still very wrong - it can't be calibrated. The difference is 1.34 +/-. That's ridiculous. I have another pH meter (more difficult to calibrate) and I just have to stick with it.
- Great for outdoor activities
- Short instructions
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