HM Digital Waterproof EC/TDS/Temp HydroTester

The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Features:Measures electrical conductivity (EC), total dissolved solids (TDS). Excellent for nutrient testing. Four scales: EC:,"_µS, mS; TDS: ppm, ppt Automatic Temperature Compensation (ATC) Water resistant Measurement Range: 0-9990,"_µS; 0-5000 ppm; 0-9.9 mS; 0-5.0 ppt Digital Calibration (push button) to any point within the meter's range Auto-off function, data-hold function and low-battery indicator Display: large and easy-to-read LCD screen includes simultaneous temperature reading. Factory Calibrated: The COM-80 meter is calibrated with a 1413,"_µS solution. The meter can be recalibrated with digital calibration using the push buttons. Includes a protective cap and batteries. Specifications:EC Range: 0 - 9990,"_µS; 0 - 9.9 mS TDS Range: 0 - 5000 ppm (mg/L); 0 - 5.0 ppt Temperature Range: 1-80 C; 33-176 F Resolution: 1,"_µS/ppm; 0.1 mS/ppt. Temp. resolution: 0.1 C/F Accuracy: +/- 2% EC-to-TDS Conversion Factor: NaCl (avg of 0.5). Calibration: Digital calibration by push button. Probe: Fixed Housing: Water resistant Power source: 3 x 1.5V button cell batteries (included) (model LR44 or equivalent) Dimensions: 15.3 x 3.2 x 1.8 cm (6.0 x 1.3 x 0.7 inches) Weight: 53.9g (1.9 oz)