Hanna Instruments Grochek Waterproof EC/TDS Tester

The Dist 4 features include a dual-level LCD, battery level indicator, replaceable pH electrode cartridge, temperature in F° or C°, automatic temperature compensation with adjustable ß, battery level indicator, stability indicator, automatic shut-off and automatic calibration all in a floating, waterproof casing. These 3-in-1 testers are unmatched in EC/TDS/ Temperature measurement! TDS (Total Dissolved Solids) is defined as the amount of solids dissolved in a solution.