TDS & EC Meters

  • 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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  • 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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  • Milwaukee Martini PROBE pH55

    This is a replacement electrode for the ph55 and pH56 models of pocket pH/Temperature meter by Milwaukee Instruments. At less than eight inches tall and one-and-a-half inches wide, Milwaukee Instruments’ Martini EC, TDS & Temperature Meter is...

    $49.95 $44.95
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