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  • HM Digital COM-300 Water Testing Meter

    HM Digital

    HM Digital Com-300 pH/TDS/EC/Temperature Digital Water Tester

    MSRP: $159.95
    $99.50
    HM Digital COM-300: Waterproof Professional Series pH/EC/TDS/Temp Meter The COM-300 is a professional grade level pH/EC/TDS/Temp meter ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture,...
    MSRP: $159.95
    $99.50

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