HM Digital Hydromaster - Continuous pH/TDS/EC/Temp meter

The HM-100 is a 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. Large and easy-to-read LCD Screen with data hold function (max 6 data values). Includes power cable, pH 4 & 7 calibration solutions, and pH storage solution.