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Pens

  • Out of Stock

    Bluelab pH Pen

    $126.14
    $126.14 - $126.14
    $126.14
    $82.20
    $82.20 - $82.20
    $82.20

    Measures pH and temperature. Selectable units for °C & °F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration...

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    $126.14
    $126.14 - $126.14
    $126.14
    $82.20
    $82.20 - $82.20
    $82.20
    Out of Stock
  • Out of Stock

    Bluelab PPM Pen

    $104.94
    $104.94 - $104.94
    $104.94
    $68.39
    $68.39 - $68.39
    $68.39

    Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful ...

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    $104.94
    $104.94 - $104.94
    $104.94
    $68.39
    $68.39 - $68.39
    $68.39
    Out of Stock

Pens and Green Houses Benefits

Pen like pH or TDS testers are easy to use and calibrate. They are sensitive to small changes and can be carried in pocket easily to any place. EC hydroponics is good way to ensure good growth in plants, you can also compare using EC vs PPM to check what works better for your hydroponic garden. Pick from our selection of high quality, water proof pens from brands such as HM Digital and Oakton. Zenhydro offers discount pens online, waterproof hydroponic pens, EC pen, advanced nutrients PPM scale, hydroponic EC and many more. Check out today.