Bluelab pH Probe Cleaning and Calibration Kit Media choose the right model for

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Bluelab pH Probe Cleaning and Calibration Kit Media choose the right model forBluelab pH Probe Cleaning and Calibration Kit Best for: owners of any Bluelab pH meter or pen who want to keep their probe accurate with regular cleaning and calibration. Our thoughts Cheap, essential, easy to forget about. A pH probe that's coated in mineral scale or hasn't been calibrated in months will lie to you confidently, which is worse than not testing at all. This kit removes any excuse not to keep on top of it. Maintaining nutrient solution