Hanna Instruments pHep 4 pH-Temperature Tester

Rugged and reliable, this tester measures pH as well as temperature (in °C or °F). The waterproof tester is designed to float and offers automatic temperature compensation, automatic calibration, a HOLD function, efficient two-button operation, and a stability indicator. In addition to automatic shut-off that conserves battery power, the tester displays battery percentage during startup and features and a Battery Error Prevention System. Includes tester, pH electrode, electrode removal tool, batteries, and instructions.