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Water Test Meters & Equipment

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  1. HM Digital COM-100 Waterproof Pro Series | TDS/EC/Temp Water Quality Test Meter (GT28-COM-100-HM)
    $155.00
    • Genuine HM Digital COM-100 EC, TDS & Temp Meter
    • Super Precise (98% Accuracy)
    • Pre-Calibrated & Reads Wide Sample Ranges
    • Upgraded Non-Linear Scales (µS, mS, ppm, ppt)
    • Conversions at the Click of A Button
    • High Quality Rivals Expensive TDS & EC Meters
    • Test salinity, drinking water quality, scientific testing, mixing nutrients/fertilizers, gardening, hydroponics, monitoring boilers, coolers, pools, spas, aquariums, wastewater, and more!
  2. HM Digital COM-300 Waterproof Pro Series pH/TDS/EC/Temp Water Quality Test Meter (GT28-COM-300-HM)
    $340.00
    • Genuine HM Digital COM-300 pH, EC, TDS & Temp Meter
    • Super Precise (98% Accuracy)
    • Pre-Calibrated & Reads Wide Sample Ranges
    • Upgraded Non-Linear Scales (pH, µS, mS, ppm, ppt)
    • Conversions at the Click of A Button
    • High Quality Rivals Expensive pH, TDS & EC Meters
    • Test salinity, drinking water quality, scientific testing, mixing nutrients/fertilizers, gardening, hydroponics, monitoring boilers, coolers, pools, spas, aquariums, wastewater, and more!
  3. HM Digital® pH Electrode Storage Solution 20mL Potassium Chloride (KCl) 28-89-HM
    $40.00
    • Storage Solution for pH Meter Electrode
    • High Concentration Potassium Chloride (KCl)
    • Convenient 20mL Sachets
    • Deionized water + 0.00002% Bactericide
  4. HM Digital® pH 7.0 Buffer Calibration Solution 20mL (28-90-HM)
    $40.00
    • pH 7.0 Buffer Solution for pH Meter 
    • Convenient 20mL Sachets
  5. HM Digital™ TDS Calibration Solution 342 ppm NaCl C-342 (28-111-HM)
    $32.00
    • EC TDS Solution - 342ppm
    • Approx 700uS/cm @ 25°C
    • TDS Calibration Fluid
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