HM Digital Meters

  • HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
    HM Digital Meters

    1000ppm Calibration Solution

    NaCl calibration solution 1000 ppm comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner.
    $13.66
  • HM Digital AquaPro TDS/Temperature Meter
    HM Digital Meters

    AquaPro TDS/Temperature Meter

    FEATURES Measures total dissolved solids (TDS) and temperature Automatic Temperature Compensation (ATC) Water-resistant housing Measurement Range: 0-5000 ppm Digital Calibration (push...
    $29.50
    $42.95
    $36.50
  • HM Digital HydroMaster Portable/Wall Mount/Bench Continuous pH/EC/TDS/Temp
    HM Digital Meters

    Continuous pH/EC/TDS/Temp portable/wallmount/bench

    HydroMaster Digital testers make monitoring water easier than ever by reading the levels that matter most and providing accurate readings that you can depend on. Continuous pH/EC/TDS/Temp monitor...
    $268.75
    $359.00
    $275.75
  • HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
    HM Digital Meters

    EC/TDS/Temp Waterproof Hydro Tester

    The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking...
    $35.44
    $42.95
    $42.44
  • HM Digital HydroMaster HM-100 Continuous pH/EC/TDS/Temp Monitor
    HM Digital Meters

    HydroMaster 100 - Continuous pH/EC/TDS/Temp Monitor

    The HM Digital HydroMaster HM100 conveys 3 critical parameters for successful gardening. The HM100 is a versatile continuous monitor that displays pH, EC (┬ÁS/mS), TDS (.5 (NaCl) / .7 (442)) &...
    $212.49
    $289.95
    $219.49
  • HM Digital PH-STOR pH Electrode Storage Solution
    HM Digital Meters

    PH/ORP Storage Solution

    For use with HM Digital's PH-200 and 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 with the...
    $10.18
  • HM Digital PH-80 pH/Temperature Meter
    HM Digital Meters

    PH/Temperature Meter

    The PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and...
    $34.90
    $46.50
    $41.90
  • HM Digital  Replacement pH Sensor Probe for HM-500
    HM Digital Meters

    Replacement pH Sensor HM-200

    HM-500 Replacement pH probe2 Meter / 80 inch cable lengthIncludes pH storage solution, 6-month warranty
    $44.99
    $59.99
    $51.99
  • HM Digital Replacement Platinum Sensor for COM-100
    HM Digital Meters

    Replacement Platinum Sensor COM-100

    This spare sensor is for HM Digital EC/TDS/Temp Combo Meter model COM-100. Features platinum TDS/EC sensor and thermister.
    $27.71
    $36.95
    $34.71
  • HM Digital Hydromaster Replacement EC/TDS Probe
    HM Digital Meters

    Replacement TDS Sensor HM-200

    The HM Digital Hydromaster EC/TDS Probe is a replacement part for the HydroMaster HM-500.
    $37.49
    $49.99
    $44.49
  • HM Digital TDS-3 Handheld TDS meter
    HM Digital Meters

    TDS-3 Handheld TDS meter

    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 measurement range of...
    $32.98
    $33.99
  • HM Digital COM-100 Waterproof EC/TDS/Temp Combo Meter
    HM Digital Meters

    Waterproof EC/TDS/Temp Combo Meter

    Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology...
    $43.08
    $76.95
    $50.08
  • HM Digital PH-200 Waterproof pH/Temperature Meter
    HM Digital Meters

    Waterproof pH/Temperature Meter

    FEATURES Measures pH and temperature Auto-ranging three point calibration with digital fine tuning Includes 4 pH buffer solution in a sponge embedded in a clear cap, so you can see if it's dried up...
    $76.44
    $101.92
    $83.44