pHep Waterproof Pocket pH Tester with 0.1 pH Resolution - HI98107

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Hanna's HI98107 pHep® pH tester displays readings with 0.1 pH resolution, ±0.1 pH accuracy, and a range from 0.0 to 14.0 pH. This rugged, reliable, ergonomic, pocket-sized tester is designed for use in the lab or fields while keeping things simple with a two-button operation.

  • Extractable Cloth Junction to Extend pH Electrode Life
  • Has Automatic Temperature Compensation
  • For Use in Fresh Water

The HI98107 tester uses an extractable cloth junction to clear junction clogs if the tester begins to exhibit erratic readings that don't stabilize. By extracting a small portion of cloth from the meter clogs are cleared, exposing a fresh, clean surface, extending the life of the pH electrode.


This pH tester can be calibrated to 1 or 2 points using the pre-programmed standard buffers (pH 4.01, 7.01, 10.01). When the standard value is recognized and stability is reached, the meter automatically accepts and stores the calibration value.


Setup options allow users to determine temperature unit and duration of the automatic shut-off options to turn the meter off after 8 minutes, 60 minutes, or disabled. The setup mode access is in the battery compartment.



HI98107 multi-level LCD

Multi-Level LCD
The large LCD displays pH, Temperature, Calibration buffer tags, battery level and instability indicator.

HI98107 Exposed Sensors

An exposed temperature sensor along with an extractable cloth junction ensures a fast and stable temperature compensated measurement.

HI98107 two button operation

Two-Button Operation
Only two buttons for meter operation. One for on/off and one for calibration.



Slim, Ergonomic Design that fits comfortably in the hand or pocket

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

Two-button Operation

Automatic Temperature Compensation, displays temperature in °C or °F

Automatic Calibration to one or two points using standard buffers (pH 4.01, 7.01, and 10.01)

Stability indicator confirms the reading has stabilized

Auto-off to preserve battery life

Battery Error Prevention System (BEPS)




More Information
pH Range 0.0 to 14.0 pH
pH Resolution 0.1 pH
pH Accuracy ±0.1 pH
pH Calibration Automatic, one or two points
pH Temperature Compensation Automatic, 0 to 50 oC (32 to 122°F)
Temperature Range 0 to 50 oC (32.0 to 122.0oF)
Temperature Resolution 0.1 oC / 0.1 °F
Temperature Accuracy ±0.5 oC / ±1.0 °F
Automatic Shut-Off 8 minutes, 60 minutes, or disabled
Battery Type/Life CR2032 3V Li-Ion (1 pc.) / approximately 800 hours of use
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 160 x 40 x 17 mm (6.3 x 1.6 x 0.7“)
Weight 65 g (2.3 oz.) without battery
Ordering Information The HI98107 is supplied with protective cap, pH 4.01 buffer sachet, pH 7.01 buffer sachet (2), electrode cleaning sachet, CR2032 battery, instrument quality certificate and instructional manual.
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