HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester

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. Measures electrical conductivity (EC), total dissolved solids (TDS).  Excellent for hydroponic 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—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: 53.9 g (1.9 oz) 1 year warranty