HM DIGITAL COM-300L Waterproof Professional Series pH/EC/TDS/Temp Meter Hydrometer
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The COM-300L is a professional grade level pH/EC/TDS/Temp meter ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more.
