The Hanna Instruments HI98318U GroLine Waterproof EC/TDS (ppm) Tester is a next‑generation pocket meter designed for hydroponic growers who demand accuracy and simplicity. Slim, ergonomic, and only 0.7" thick, it fits comfortably in your hand while delivering precise measurements of electrical conductivity, total dissolved solids, and temperature. A large, easy‑to‑read LCD shows all key indicators, and intuitive two‑button operation makes calibration and testing fast and reliable.
• Graphite sensor minimizes polarization for stable, repeatable EC/TDS readings
• Simplified two‑button design for power and one‑point automatic calibration
• Quick Calibration mode compatible with Hanna pH/EC Quick Cal solution for rapid setup