HM Digital HydroTester 80s - The Ultimate EC/TDS/TEMP Meter For Plant Health

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Sale price$64.99 Regular price$89.99
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Commercial & ACMPR growers: Email us for wholesale orders


COM-80, the epitome of advanced and affordable EC/TDS meter technology available today. This exceptional device stands out as the most reliable and economically priced option on the market. With its unparalleled versatility and durability, the COM-80 is the ideal companion for testing a wide range of applications including hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water, and beyond. Elevate your testing experience with this cutting-edge meter, designed to deliver precise and accurate results for all your measurement needs. Discover the COM-80 difference and unlock a world of possibilities for enhanced monitoring and analysis.


  • EC Range: 0 – 9990 µS; 0 – 9.9 mS
  • TDS Range: 0 – 5000 ppm (0.5 Scale) ; 0-8560 ppm (0.7 Scale)
  • Temperature Range: 1-80 °C; 33-176 °F
  • Resolution: 1 µS/ppm; 0.1 mS
  • Temp. Resolution: 0.1 °C/F
  • Accuracy: +/- 2%


  • Measures electrical conductivity (EC), total dissolved solids (TDS). Excellent for nutrient testing
  • Four scales: EC: µS, mS; TDS: ppm, 0.5 (NaCl) & 0.7 (442™)
  • Automatic Temperature Compensation (ATC)
  • Water resistant
  • Digital Calibration (push button) to any point within the meter’s range
  • Auto-off function, data-hold function and low-battery indicator
  • Display: large and easy-to-read LCD screen includes simultaneous temperature reading.
  • Factory Calibrated: The COM-80 meter is calibrated with a 1413 µS solution.
  • Includes a protective cap and batteries

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