Elcometer 138 Conductivity Meter

 Incorporating a flat sensor, the Elcometer 138 Conductivity Meter can measure the conductivity of a solution from a single drop of a sample.


  • Highly precise measurements can be obtained from a single drop
  • Automatic range switching gives a wide measurement range of 1μS/cm to 19.99mS/cm
  • Out of range and low battery alarms
  • Visual indication when ambient temperature is outside the operating range


Users can either place a sample on the meter’s flat sensor or immerse the meter’s sensor directly into the solution under test. The Elcometer 138 can be used for a broad range of applications, including: soluble salt concentrations, the electric conductivity (EC) of solutions used in agricultural operations and measuring rainwater pollution levels.

The Elcometer 138 Conductivity Meter includes a convenient salinity conversion indicator.

Elcometer 138 Conductivity Meter

Elcometer 138 Conductivity Meter can measure the conductivity of a solution from a single drop of a sample.

  • Part Number : E138-CM
  • Certification : No Certificate
Part NumberDescription
E138-CMElcometer 138 Conductivity Meter
Measurement PrincipleMeasurement Principle
Measurement ModeConductivity, Temperature
Minimum Sample Volume0.12ml
Measuring Range0 – 19.99mS/cm
Resolution0 – 1999μS/cm: 1μS/cm
2.00 – 19.99mS/cm: 0.01mS/cm
Accuracy±2% full scale (for each range)
Operating Temperature5°C to 40°C (41°F to 104°F)
Operating Humidity85% or less relative humidity (no condensation)
Battery Type2 x CR2032 lithium batteries
Battery Lifeapprox. 200 hours of continuous use without backlight
Weight50g (1.76oz) – including sensor and batteries
Dimensions164 x 29 x 20mm (6.5 x 1.1 x 0.79”)
Packing ListElcometer 138 Conductivity Meter, 14ml (0.5fl oz) bottle of conditioning solution, 14ml (0.5fl oz) bottle of standard 1413μS/cm calibration solution, 2 x CR2032 lithium batteries and operating instructions