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EC150 Electrical Conductivity/TDS/Temperature Tester. High accuracy, multi-ranging, waterproof, pocket sized tester for a wide range of applications.

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EC150 Electrical Conductivity/Temperature Tester. Waterproof meter with high-accuracy multi-ranging sensor. Temperature display can be switched between C and F. Accuracy of +/- 1% of Full Scale allows you more confidence in your readings. This meter can automatically switch to the range that is appropriate for the sample being tested.

  • Units of measure include µS/cm, mS/cm, ppm, and ppt
  • Large 3-1/2 digit (2000 count) LCD display
  • Data Hold and low battery indication
  • Auto Power off with disable
  • Adjustable Automatic Temperature Compensation
  • Simultaneous display of Conductivity (or TDS) plus Temperature
  • Two ranges for Conductivity and TDS with one point calibration per range
  • Waterproof design to withstand wet environment — meets IP65 standard
  • Includes meter, protective sensor cap, and four LR44 button batteries. Conductivity standards sold separately (required for calibration)


Ranges Max. Resolution Accuracy
Conductivity 0 to 1999μS/cm
00 to 19.99mS/cm
±1% FS

0 - 1999ppm
0 - 19.99ppt


±1% FS
Temperature 32° to 122°F
(0 to 50°C)
0.1°F/°C ±0.9°F/1°C
Power Four LR44 button batteries

6.5 x 1.4 x 1.3"
(165 x 35 x 32mm)

Weight 3.8oz (110g)

Remember to purchase the Conductivity Standard to calibrate. You can use either 1,413µS or 12,880µS for this instrument. We recommend 1,413µS if you plan to test mostly in the lower conductivity range (water or most soil samples). If you plan to test high conductivity soil, foliar spray solutions or animal diets (RBTI), you should choose 12,880µS for calibration.