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HM Digital

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  • C-342 TDS and EC Calibration Solutions - HM Digital

    C-342 TDS and EC Calibration Solutions - HM Digital

    HM Digital

    $7.95
    C-342: TDS and EC Calibration Solutions For optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges. FEATURES: NaCl...
  • DM-1: In-Line Dual TDS Monitor - HM Digital

    DM-1: In-Line Dual TDS Monitor - HM Digital

    HM Digital

    $29.95
    The DM-1 is consumer friendly monitor measuring feed (input) water vs. product (output) water of a water filtration system at any time. This device is ideal for Reverse Osmosis (RO), Deionized water...
  • pH Electrode Storage Solution - HM Digital

    pH Electrode Storage Solution - HM Digital

    HM Digital

    $9.99
    PH storage solution for HM Digital’s PH-200 / PH-80 as well as other brands of pH meters. Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap...
  • Pocket Size TDS & Temperature Meter (TDS-4TMA) - HM Digital

    Pocket Size TDS & Temperature Meter (TDS-4TMA) - HM Digital

    HM Digital

    $22.45
    The TDS-4TMA handheld meter is ideal for testing TDS and salt levels of freshwater aquariums and ponds. It can also be used for testing water filtration and purification systems, such as RO and DI,...
  • TRM-1: Triple In-Line TDS Monitor - HM Digital

    TRM-1: Triple In-Line TDS Monitor - HM Digital

    HM Digital

    $42.99
    The TRM-1 is a unique monitor offering the user 3 points of contact during the filtration process. This TDS monitor allows for checking TDS levels at 3 points, such as with DI/RO (deionization /...
  • Waterproof pH/Temp Meter - HM Digital

    Waterproof pH/Temp Meter - HM Digital

    HM Digital

    $79.95
    Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers...