GroChek Hanna EC/TDS Monitor w/ HI7632 EC Probe


Waterproof and chemically resistant, this monitor has been designed to meet the grower's need for equipment suited to the aggressive environments found in agricultural and hydroponics applications. At startup, the meter performs a self-check to ensure proper working condition.

This monitor from Hanna has a backlit LCD and displays instantaneous readings of both EC or TDS and temperature—even from a distance.

The instrument features a stability indicator that prompts the user when to take the reading. For manual recording purposes, readings can be frozen on the LCD display by pressing the HOLD button.

Calibration and temperature compensation are automatic, while the EC/TDS conversion factor and temperature coefficient factor (β) are user adjustable for application specific measurements.

  • Large liquid crystal display for easy reading
  • Housing completely sealed against vapors and humity
  • Probe automatically compensates for temperature variation
  • Waterproof
  • Measure in °C or °F
  • HOLD function
  • Adjustable TDS ratio
  • Adjustable β
  • Stability indicator
  • Backlit display
  • 12 VDC power supply
  • Includes conductivity probe, 1413 µS/cm calibration solution sachet, 12 VDC adapter, and instructions
1.3 lbs.
8.2L x 5.7W x 2.3H
1 Year

Why are PPM, TDS, pH and EC important?

PPM and TDS are abbreviations that represent the concentration of elements in a solution or atmosphere. PPM is short for parts per million and TDS for total dissolved solids. EC (electro conductivity) is another form of measurement for TDS. PH is a measure of acidity or alkalinity which dictates plant uptake of particular elements.

What is the suggested pH range for my hydroponic system and soil plants?

Hydroponic and soil gardens differ in the fact they both need different pH ranges for nutrients to be made available for plant absorption. Maintain a pH between 5.0 and 6.5 for hydroponic gardens and 6.0 to 7.0 for soil applications.