HM Digital COM-80 EC/TDS HydroTester

• Measures electrical conductivity (EC), total dissolved solids (TDS).  Exellent 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.
• Need help deciding which meter is right for you?  View our TDS/EC Meter Selection Guide.

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)