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)