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ORP/Temperature Tester - HI98120


HI98120 ORP/Temperature tester is a compact, portable, hand-held tester with a two-button operation system. ORP measurements are a valuable parameter used to evaluate water quality. ORP measurements allow users to monitor the effectiveness of disinfecting compounds.

  • Waterproof IP67 rating
  • Replaceable ORP Electrode 
  • Extractable Junction

The compact, waterproof casing is designed to float when dropped in water. The tester is factory calibrated and measures temperature in both °C and °F. A stability tag that indicates when the reading has stabilized. Battery level and low-battery indicator are clearly displayed on the LCD to alert the user in the event that low battery power could adversely affect the readings

The HI73120 replaceable ORP electrode is designed as an easy-fit cartridge that locks into place, featuring two o-rings to maintain a watertight seal. The exposed stainless steel temperature probe on this meter facilitates a faster, accurate temperature measurement.

ORP measurements are a valuable parameter when evaluating water quality. ORP measurements allow users to monitor the effectiveness of disinfecting compoundsand redox reactions. HI98120 is used to monitor chlorine levels for many applications including swimming pools, spas, food sanitization, plating baths, wastewater treatment, and cooling tower water treatment.


Waterproof casing designed to float if dropped in water

Stability indicator confirms the reading has stabilized

Replaceable electrode extends the life of the tester

HOLD button for easier measurement recording

Auto-off to preserve battery life

Battery % level displayed when tester is powered on

More Information
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
ORP Electrode HI73120 replaceable ORP electrode (included)
Automatic Shut-Off after 8 minutes of non-use
Battery Type/Life 1.5V (4) / approx. 300 hours of continuous use
Environment -5 to 50°C (23 to 122°F); RH max 100%
Dimensions 163 x 40 x 26 mm (6.4 x 1.6 x 1.0’’)
Weight 100 g (3.5 oz.)
Ordering Information HI98120 (ORP) is supplied with HI73120 ORP electrode, HI73128 electrode removal tool, batteries and instructions.
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