Product Code: HI98120 The Hanna HI98120 ORP/Temperature Tester is a compact, waterproof handheld meter designed to measure oxidation-reduction potential (ORP) and temperature in water and other liquid samples. Its sealed housing is IP67 rated and designed to float, making it well suited for routine water-quality testing in the field, laboratory, swimming pools, aquaculture, wastewater, and industrial applications. The HI98120 measures ORP from -1000 to +1000 mV with a resolution of 1 mV and an accuracy of ±2 mV. It simultaneously measures temperature from -5.0 to 60.0°C (23.0 to 140.0°F) with 0.1°C resolution and ±0.5°C accuracy. The meter is factory calibrated and displays both ORP and temperature on its dual-level LCD.Note that storage solution (Not included) is required for initial activation of the electrode. Measures ORP and temperature simultaneously ORP range: ±1000 mV ORP resolution: 1 mV ORP accuracy: ±2 mV Temperature range: -5.0 to 60.0°C (23.0 to 140.0°F) Temperature resolution: 0.1°C / 0.1°F Temperature accuracy: ±0.5°C / ±1°F HI73120 replaceable ORP electrode included IP67 waterproof housing Floating design helps prevent accidental loss in water Extendable cloth electrode junction Stability indicator HOLD function freezes readings on the display Battery percentage indicator Automatic shut-off after 8 minutes of non-use Factory calibrated Ordering Information: HI98120 (ORP) is supplied with HI73120 ORP electrode, HI73128 electrode removal tool, batteries, ORP test solution - 470 mV, 20 mL sachet (6 pcs.), and instructions.Warranty: 1 year (probe 6 months) Storage Solution is not included with the meter. ORP Calibration Solutions Replacement Electrode Changing Tool