HI GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

SKU: HI98131

225.00 225.0 USD 225.00


All measurements are in a single, hassle-free tester.
Quick Cal solutions to calibrate pH and conductivity all at once with a single solution.
Perfect for hydroponics, greenhouse, and agriculture use.

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    HI GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

    The HI98131 measures pH, conductivity (EC), total dissolved solids (TDS), and temperature with a selectable EC to TDS conversion factor. The pH readings are displayed with a 0.01 resolution and with an accuracy of ±0.05 pH. EC and TDS readings are displayed with a 0.01 mS/cm and 10 ppm (mg/L) resolution and 2% full-scale accuracy. The EC range of the HI98131 is from 0.01 to 6.00 mS/cm and TDS is from 0 to 3000 ppm using a 0.5 conversion factor or 0 to 3999 with a 0.7 EC to TDS conversion factor.

    • 3 parameters, pH, EC/TDS, and temperature in one meter
    • Quick Cal Mode to calibrate pH and EC/TDS with one solution
    • TDS Conversion Factor selectable between 0.5 (500 ppm) and 0.7 (700 ppm)

    Simplified one-button calibration

    One or two-point pH calibration is automatic to a pre-programmed buffer set (4.01, 7.01, and 10.01) or single-point pH and EC calibration with the Hanna Quick Cal calibration solution. 

    HI73127 Replaceable pH electrode

    The HI99131 is supplied with the HI73127 replaceable pH electrode. This electrode features an extractable junction that can be pulled 1/8" out to clear any clogging that results in drifting and erratic readings.

    • Waterproof and floats in water, designed for the humid growing environment
    • Wide pH range of 0.00 to 14.00 pH
    • Automatic Temperature Compensation (ATC), displays temperature in °C or °F
    • Large LCD displays stability indicator, low-battery indicator, and calibration tags
    • HOLD button for easier measurement recording
    • Battery Error Prevention System (BEPS) with three automatic shutoff settings
    • Battery % level at startup
    Weight (lbs)0.25
    Length (in)6.4
    Width (in)1.6
    Height (in)3.4
    pH Range0.00 to 14.00 pH
    pH Resolution0.01 pH
    pH Accuracy±0.1 pH
    pH Calibrationautomatic, at one or two points using standard buffers (pH 4.01, 7.01,10.01); one point calibration using quick calibration solution
    pH Temperature Compensationautomatic
    EC Range0.00 to 6.00 mS/cm
    EC Resolution0.01 mS/cm
    EC Accuracy±2% F.S.
    EC Calibrationautomatic, one-point at 1.41 mS/cm or 5.00 mS/cm; one point calibration using quick calibration solution
    TDS Range0 to 3000 ppm (500 CF); 0 to 3999 ppm (700 CF)
    TDS Resolution10 ppm (mg/L)
    TDS Accuracy±2% F.S.
    TDS Calibrationdone through conductivity
    EC/TDS Temperature CompensationEC/TDS
    EC to TDS Conversion Factor0.5 (500 ppm) or 0.7 (700 ppm)
    Cell Typeamperometric two pole
    Temperature Range0.0 to 60.0°C / 32.0 to 140.0°F
    Temperature Resolution0.1°C / 0.1°F
    Temperature Accuracy±0.5°C /±1°F
    Automatic Shut-Offauto-off after 8 minutes of non-use
    Battery Type/Life1.5V (4) / approx. 100 hours of continuous use
    Environment0 to 50°C (32 to 122°F); RH max 100%
    Ordering InformationHI98131 is supplied with HI73127 pH electrode, HI73128 electrode removal tool, batteries (4), instructions, and quality certificate