Bluelab EC Pen



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Bluelab Electrical Conductivity (EC) Pen accurately measures the temperature and conductivity (EC or ppm) in any hydroponic nutrient solution.

It is crucial to ensure perfect pH level in your nutrient solution, not too acidic or alkaline for maximum plant growth. The perfect temperature is as equally important, not too hot or cold which can affect the overall growth rate.


  • Waterproof
  • EC, CF, PPM 500 (TDS) or PPM 700; for temperature
  • ˚C or ˚F.
  • One-year warranty
  • Flat electrode
  • Easy to clean and maintain
  • Auto-off function to extend battery life
  • 1 AAA battery included