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  • General Hydroponics
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  • Botanicare
  • CANNA
  • Titan Controls
  • Fox Farm
  • Sunleaves
  • Activa Aqua
  • PLAGRON
  • View all Brands

    • TDS & EC Meters

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      Hanna Primo Digital TDS Meter

      Hanna Instruments Primo TDS Meter Customers who want to ensure the purity of the water produced by their RO water filtration system will enjoy the ease-of-use afforded them by the Primo TDS Tester. This microprocessor-powered instrument provides Total...

      $39.95
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      HM Digital TDS meter TDS-3

      Ideal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficent and accurate due to its advanced microprocessor technology. It features a measurment range of 0-9990 ppm. From 0-999 ppm, the resolution is in increments...

      $29.95
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      Bluelab PPM Pen

        The Bluelab ppm Pen measures conductivity and temperature and is a great way to ensure plants are receiving the proper amounts of nutrients. This pen features a backlit LCD display, optional calibration and a successful calibration...

      $94.00 $84.95
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      Bluelab Truncheon

      Gardeners can easily measure and maintain nutrient strength levels with the waterproof Truncheon Meter. Truncheon Meter reads in EC (0.2-3.6), CF (2-36), TDS/ppm 500 (100-1800) and ppm 700 (140-2520). Accurate within ± 4% of reading with a...

      $140.00 $129.95
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      Bluelab Pulse Multimedia EC/MC Meter

      Bluelab® Pulse Multimedia EC/MC Meter is a new innovation that connects directly to your mobile device. Quickly spot check, correct, achieve better yield and grow healthier plants across a wide range of growing media including soil, coco coir,...

      $299.95
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      HM Digital TDS meter COM80

      Measures EC (μS, mS), TDS (ppm, ppt) and temperature in ºC/ºF. Features a durable, water-resistant housing, automatic temperature compensation, hold button, auto shut-off, digital (push button) calibration, low battery indicator, and a...

      $44.95
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