EC500 Waterproof ExStik® II pH/Conductivity Meter

The Extech EC500 is a conductivity/TDS/temperature meter. The EC500 measures five parameters including conductivity, TDS, salinity, pH, and temperature using one electrode. Analog bar graph indicates trends. The Extech’s EC500 build-in memory stores up to 25 labelled readings. The EC500 is a waterproof meter with a high-accuracy multi-ranging sensor. Features Auto Power off with disable.


  • Measures 5 parameters including Conductivity, TDS, Salinity, pH, and Temperature using one electrode
  • 9 units of measure: pH, µS/cm, mS/cm, ppm, ppt, mg/L, g/L, °C, °F
  • Analog bargraph indicates trends
  • Memory stores up to 25 labeled readings
  • Adjustable Conductivity to TDS ratio from 0.4 to 1.0; 0.5 fixed Salinity ratio
  • Renew feature alerts user when electrode needs replacement
  • Order Conductivity standards and pH buffers separately
  • Complete with meter and electrode, protective cap, sample cup, four 3V CR-2032 batteries, and 48" (1.2m) neckstrap