GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory

I’m using this in a hydroponic setup. It works great. One difficult thing is measuring out the calibration solutions. I have access to a lab, with scales and distilled water, but I don’t know how others would do this easily. The unit performs very well. Initial calibration is important to get accurate pH readings. But once you set it up, you don’t need to recalibrate often. The only time I needed to recalibrate was when I forgot to store the probe in the solution. Important: you never want to store the pH probe dry. It will become Un-calibrated and lose proper function if done repeatedly. Overall, it’s a really nice pH probe at a reasonable cost.

Conforme à mes besoins

Funciona perfectamente

Mkt bra

pretty accurate