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Extech EC500 Waterproof ExStik II pH/Conductivity Meter

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Key Features

  • Combination flat surface pH electrode with autoranging high accuracy conductivity cell
  • Measures 5 parameters including conductivity, TDS, salinity, pH, and temperature using one electrode
  • 9 units of measure: pH, ┬ÁS/cm, mS/cm, ppm, ppt, mg/L, g/L, Celsius, Fahrenheit
  • Analog bargraph indicates trends
  • Memory stores up to 25 labeled readings

Package Details

Shipping Weight: 0.44 pounds
Package Size: 9.2 x 3.9 x 2.1 inches

Product Description

ExStik II pH/Conductivity/TDS/Salinity Meter

The Extech EC500 ExStik features seven units of measure (pH, µS/cm, mS/cm, ppm, ppt, mg/L, g/L), internal memory that stores up to 15 labeled readings for easy recall, adjustable conductivity to TDS ratio factor from 0.4 to 1.0, and self-calibration upon power up.

Accurate Sensor Measures Four Parameters

The EC500 incorporates the latest microprocessor chip technology and patented sensor technology to enable the simultaneous measurement of conductivity, TDS, salinity, and temperature. With the touch of a button the EC500 allows you the flexibility of interchangeable cell constants and has made the job of testing fast, accurate, and repeatable.


  • Wastewater and drinking water analysis
  • Environmental tests to determine the health of ponds, streams, wells, and other bodies of water
  • Manufacturing processes such as component or PCB rinsing

Related Products

ExStik II pH/Conductivity/TDS/Salinity/Temperature Kit

Kit includes the EC500 ExStik pH/Conductivity/TDS/ Salinity/Temperature Meter, with EC505 sensor, protective cap, 84μS/cm, 1413μS/cm and 12880μS/cm Conductivity calibration standards (30mL bottle each), pH buffer pouches (one each of 4, 7, 10 pH plus rinse solution), weighted base, three sample cups with caps, four 3V CR-2032 batteries, 48" (1.2m) neckstrap, and carrying case.

From the Manufacturer

Innovative design with flat surface technology for quick on-the-spot pH measurements combined with autoranging high accuracy Conductivity cell. Measures 5 parameters including Conductivity, TDS, Salinity, pH, and Temperature using one electrode. Includes electrode, protective sensor cap, sample cup with cap, four 3V CR-2032 batteries, and 48-Inch (1.2m) neck strap.

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