HM Digital Hydromaster Portable - pH/TDS/EC/Temp

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. Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity and Temperature. Displays 3 parameters (pH/EC or TDS/Temp) simultaneously. Auto-off function, data-hold function, and low-battery indicator. Includes protective rubber boot, 2 (AA) alkaline batteries, pH 4 & 7 calibration solutions, and pH storage solution.