BlueLab pH Pen

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This item is heavily discounted and may not qualify for discounts unless bulk quantities are requested


    Photograph of BlueLab Calibration Solution - 7.0 pH - 500ml
    BlueLab Calibration Solution - 7.0 pH - 500ml $19.46
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    The Bluelab pH Pen is the most ergonomic and easy to use pH pen available for hydroponics and indoor gardening. The Bluelab pH Pen is completely waterproof, so you don't have to worry about accidentally dropping it in your solution. The Bluelab pH Pen also has one button push calibration. No more hard to follow instructions to make sure your pH meter is accurate. Storage and calibration solution is required for maintenance and longevity of your pH pen.

    Bluelab pH Pen Tester Meter

    The Bluelab pH Pen is the latest innovation for hand held pH meters and is the ultimate handy solution for measuring pH. Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control.

    The Bluelab pH Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. Teamed with our Bluelab EC Pen or Bluelab ppm Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health.

    The Bluelab pH Pen and conductivity pen range has been specially developed as an affordable and effective option for hobby or small scale growers.

    Storage and calibration solution is required for maintenance and longevity of your pH pen.

    Bluelab pH Pen Setup and Calibration Video:

    Why is measuring pH vital to the success of your crop?

    Plants eat. They get their nutrition from minerals but they can only get all the minerals they need if certain conditions are right. A key thing that affects food uptake is whether your solution is acid or alkaline. We measure this in pH.

    The clever little pH pen ensures you maintain the optimum pH reading that allows nutrients to be available to your plants.

    Once you have measured the pH using the Bluelab pH Pen and know your plants can get at the food, you then then to measure how much food is available. This is referred to as conductivity and is measured by either ppm or EC. This is where the Bluelab EC Pen or Bluelab ppm Pen comes in.


  • Measures pH and temperature
  • Selectable units for C & F
  • Backlit LCD display
  • Double junction probe (not replaceable)
  • Successful calibration indicator
  • Hold function
  • Low battery warning
  • Fully waterproof
  • Auto off function
  • Automatic temperature compensation
  • Specifications:

  • Units - pH, °C, °F
  • Range - 0.0 to 14.0 pH
  • Range - 0-50 °C / 32-122 °F
  • Resolution - 0.1 pH
  • Resolution - 1 °C / 1 °F
  • Accuracy @ 25 °C +- 0.1 pH
  • Battery type - 1 x AAA alkaline
  • 12 month product guarantee
  • Bluelab Grow Book
    More Information
    NameBlueLab pH Pen
    Weight (lbs)1
    FREE ShippingYes