Otaki Hydroponics

Bluelab pH Pen


This clever little handheld pen will help you manage the success of your crops. The pH pen provides a pH reading of the solution so you know that the nutrients will be made available to your plants. Comes with a 1 year limited written guarantee with proof of purchase.


  • measures pH and temperature ( C or F)
  • Automatic temperature compensation (ATC)
  • Double junction probe (not replaceable)
  • Successful pH calibration indicator
  • Holding reading function
  • Fully waterproof
  • Low battery indicator
  • Backlit LCD display
  • Auto off function

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