The Extech PH50 and PH60 pH pens are easy-to-use, low cost waterproof pH pens. These Extech pH pens have pH accuracies of ±0.3pH (PH50) or ±0.2pH (PH60) over ranges of 2.0 to 12.0 pH and 0.0 to 14.0 pH respectively. The Extech PH60 pH pen also has the ability to measure temperature, with an accuracy of ±1°F/±0.5°C over a range of 32 to 122°F (0 to 50°C). You can easily calibrate both pens using the CAL button which features automatic pH buffer recognition.
Other features of the Extech PH50 and PH60 pH pens include data hold, low battery indicator, and auto power off. The PH60 also includes automatic temperature compensation.
We're open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET