HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter Controller digital thermometers can measure the

digital thermometers can measure the temperature of many substances from air to liquids to surfaces—all electronically

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HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter Controller digital thermometers can measure theDescription COM 300L: Waterproof Professional Series pH EC TDS Temp Meter 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 and scientific testing, pools and spas, ecology testing, boilers and cooling towers, water treatment and more. Features Measures Potential Hydrogen (pH), Electrical