Description
The HI98129 is engineered for users who require precise and reliable low-range conductivity and high-accuracy pH measurements in a single handheld device. It measures pH from 0.00 to 14.00, EC from 0 to 3999 µS/cm, TDS from 0 to 2000 ppm, and temperature from 0.0 to 60.0°C, all with automatic temperature compensation. With 0.01 pH resolution and ± 0.05 pH accuracy, it delivers superior performance compared to standard pocket testers. The automatic one- or two-point pH calibration and one-point EC/TDS calibration simplify setup and ensure consistent results.
Designed for durability and ease of use, the tester features a waterproof casing that floats if dropped in water. The integrated graphite EC sensor minimizes polarization effects and resists oxidation, improving measurement stability. A large LCD displays calibration tags, stability indicators, and low battery warnings, while the HOLD function allows convenient data recording. The replaceable HI73127 pH electrode with extractable junction extends electrode life, and the adjustable EC to TDS conversion factor (0.45–1.00) provides flexibility for different water quality applications.






