Sure Test Base Plus pH Pen +/- 0.05 ATC

The Sure Test Base Plus pH Pen combines performance with affordability. Reads both pH and temperature (F or C) with automatic temperature compensation (ATC) for more reliable pH measurements. Features a pH resolution of 0.01 and an impressive pH accuracy of +/- 0.05. Single touch auto buffer recognition for easy, error-free calibration. Waterproof housing (IP65 rated). Comes with 4x LR44 batteries.