H Pen, pH measurement is easier than ever with the pH Pen – an economical range pocket-size tester designed for on-the-go pH measurements, Each

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Accurate and easy to use, these testers are ideal for quick pH measurements in hydroponic gardening, aquaculture, agriculture, pools, simple lab work and other water/wastewater applications. ±0.1% accuracy across full pH rangeAuto-buffer recognition and auto-calibration functions – quick, easy calibrations at the press of a buttonLong-lasting sensor – large volume of polymer gel reference gives longer sensor lifespan, while single Kynar™ reference junction prevents cloggingAutomatic temperature compensation and up to three calibration points for broadened accuracy throughout the pH range