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

The HI98131 is a slim, lightweight, and waterproof pocket tester that measures pH, conductivity (EC), TDS (ppm), and temperature.

Simple, two-button meter operation and advanced features, including a selectable EC to TDS conversion factor (0.5 - 500 ppm and 0.7 - 700 ppm) for your essential testing.

  • All measurements 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.

Specifications: 

  • pH Range: 0.00 to 14.00 pH
  • pH Resolution: 0.01 pH
  • pH Accuracy: ±0.1 pH
  • pH Calibration: automatic, at one or two points using standard buffers (pH 4.01, 7.01,10.01); one point calibration using quick calibration solution
  • Conductivity Range: 0.00 to 6.00 mS/cm
  • Conductivity Resolution: 0.01 mS/cm
  • Conductivity Accuracy: ±2% F.S.
  • TDS Range: 0 to 3000 ppm (500 CF); 0 to 3999 ppm (700 CF)
  • TDS Resolution: 10 ppm (mg/L)
  • TDS Accuracy: ±2% F.S.
  • Temperature Range: 0.0 to 60.0°C / 32.0 to 140.0°F
  • Temperature Resolution: 0.1°C / 0.1°F
  • Temperature Accuracy: ±0.5°C /±1°F
  • Temperature Compensation pH: automatic; EC/TDS: automatic with β set at 1.9%/°C
    EC/TDS Calibration: automatic, one-point at 1.41 mS/cm or 5.00 mS/cm; one point calibration using quick calibration solution
  • TDS Conversion Factor: 0.5 (500 ppm) or 0.7 (700 ppm)
  • Battery Type/Life: 1.5V (4) / approx. 100 hours of continuous use, auto-off after 8 minutes of non-use
    Auto-off after 8 minutes, 60 minutes, disabled
  • Environment: 0 to 50°C (32 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.)
  • Warranty: 1 year

Supplied with HI73127 pH electrode, HI73128 electrode removal tool, batteries (4), instructions and quality certificate.



Manufacturer : Hanna Instruments

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637-207-02
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Cat.#Mfg.#PriceQuantityEstimated Availability
637-207-02HI 98131$220.50 EA  
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