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Hanna Instruments Canada
Customer Support: (800) 842-6629

Pool Line Waterproof ORP & Temperature Tester - HI981204


In stock

HI981204 Pool Line ORP and temperature meter is made for measuring the oxidation (chlorine) level of swimming pool, hot tub, or spa water. This lightweight, waterproof tester offers high accuracy ORP, and temperature measurements in a single handheld unit.

  • 1 mV resolution and ±2 mV accuracy
  • Replaceable ORP Electrode 
  • Simultaneous display of ORP & temperature



2 sensors in a single meter

Waterproof casing designed to float if dropped in water

ORP range of ±1000 mV

Large LCD displays stability indicator, low-battery indicator, and calibration tags

HOLD button for easier measurement recording

Battery Error Prevention System (BEPS)

Replaceable, platinum ORP Electrode

Automatic shut-off with three user controlled settings

Additional information

Temperature Accuracy

±0.5 °C (±1.0 °F)

Temperature Range

-5.0 to 60.0 °C (23.0 to 140.0 °F)


SKU HI981204
Name Pool Line Waterproof ORP & Temperature Tester – HI981204
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 Accuracy ±0.5 °C (±1.0 °F)
ORP Electrode HI73120
Automatic Shut-Off After 8 minutes of non-use
Battery Type/Life 1.5V (4)/ Approximately 300 hours
Environment -5 to 50 °C (23 to 122 °F); RH 100%
Dimensions 171 x 41 x 26 mm (6.7 x 1.6 x 1.0”)
Weight 83 g (2.9 oz.)

Ordering Info

HI981204 is supplied with HI700224 470 mV ORP test solution, 20 ml sachet (6 pcs.), 20 mL sachet (1 pc.), HI73120 ORP electrode, HI73128 Electrode removal tool, storage/protection cap, 1.5V batteries (4 pcs.), instrument quality certificate, and instruction manual.


Pool Line Waterproof ORP & Temperature Tester – HI981204