Hanna Instruments Grochek Waterproof pH Tester

The pHep 4 features include a dual-level LCD, battery level indicator, replaceable pH electrode cartridge, temperature in F° or C°, stability indicator, automatic shut-off and automatic calibration all in a floating, waterproof casing. The replaceable electrode has a pull-out cloth junction so when it becomes dirty from routine testing, simply pull it out 1/8in. to rejuvenate the electrode.