HI98131 GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

The HI98131 is a slim, lightweight, and waterproof pocket sized meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature. The meter operation is simplified with two buttons. One is used for on/off and for calibration while the other is used to switch between the measurement modes. The HI98131 has advanced features including a selectable EC to TDS conversion factor (0.5 – 500 ppm and 0.7 – 700 ppm).

• 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)

• More Information

  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
  pH Temperature Compensation	automatic
  EC Range	0.00 to 6.00 mS/cm
  EC Resolution	0.01 mS/cm
  EC Accuracy	±2% F.S.
  EC Calibration	automatic, one-point at 1.41 mS/cm or 5.00 mS/cm; one point calibration using quick calibration solution
  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.
  TDS Calibration	done through conductivity
  EC/TDS Temperature Compensation	EC/TDS: automatic with β set at 1.9%/°C
  EC to TDS Conversion Factor	0.5 (500 ppm) or 0.7 (700 ppm)
  Cell Type	amperometric two pole
  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
  Automatic Shut-Off	auto-off after 8 minutes of non-use
  Battery Type/Life	1.5V (4) / approx. 100 hours of continuous use
  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.)
  Ordering Information	HI98131 is supplied with HI73127 pH electrode, HI73128 electrode removal tool, batteries (4), instructions and quality certificate.