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HM-200: Portable pH/EC/TDS/Temp Monitor The HM-200 is a versatile portable pH/EC/TDS/Temp monitor 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. Features Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity and Temperature Five scales: pH, µS, mS, ppm 0.5 (NaCl) Scale & 0.7 (442™) Scale Automatic Temperature Compensation (ATC) using three temperature coefficients Digital Calibration (push button) to any point within the meter’s range Auto-off function, data-hold function and low-battery indicator Large and easy-to-read LCD Screen Displays 3 parameters (pH/EC or TDS/Temp) simultaneously. Replaceable Sensors (model SP-C2 for Conductivity, SP-P5 for pH) Factory Calibrated (pH/EC/TDS) Includes protective rubber boot, 2 (AA) alkaline batteries, pH 4 & 7 calibration solutions, pH storage solution
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🇺🇸 Ship from USA · On Agora since 2026
$244.95