Extech EC400 Waterproof ExStik Conductivity/TDS/Salinity Meter


Key Features:

  • Autoranging meter offers 3 ranges of measurements from tap water to wastewater and any aqueous solution requiring a conductivity, TDS or Salinity measurements
  • Units of measure include ìS/cm, mS/cm, ppm, ppt, mg/L, and g/L
  • Adjustable Conductivity to TDS ratio factor from 0.4 to 1.0 -- conveniently calculates the TDS value
  • Large 3-1/2 digit (2000 count) Digital display with analog bargraph to indicate sample trends
  • Data Hold, Auto Power Off and low battery indication
  • Automatic Temperature Compensation of 2% per C
  • Simultaneous display of Conductivity, TDS, or Salinity plus Temperature
  • Internal memory stores up to 25 labeled readings for easy recall
  • Self calibration of electronics on power up
  • Easy to replace Conductivity cell module
  • Waterproof design to withstand wet environment – meets IP57 standard
  • Includes meter and Conductivity cell*, protective sensor cap, sample cup with cap, four SR44W button batteries, and 48"(1.2m) neckstrap

Secured and trusted checkout with

One high accuracy multi-range sensor measures four parameters (Conductivity, TDS, Salinity and Temperature)





 0 to 199.9μS/cm
 200 to 1999μS/cm
 2.00 to 19.99mS/cm


 ±2% FS


 0 to 99.9ppm (mg/L)
 100 to 999ppm (mg/L)
 1.00 to 9.99ppt (g/L)

 0.1ppm (mg/L)
 1ppm (mg/L)
 0.01ppt (g/L)

 ±2% FS


 0 to 99.9ppm (mg/L)
 100 to 999ppm (mg/L)
 1.00 to 9.99ppt (g/L)

 0.1ppm (mg/L)
 1ppm (mg/L)
 0.01ppt (g/L)

 ±2% FS


 32° to 149°F (0 to 65°C)




 Four CR2032 button batteries


 1.4 x 6.8 x 1.6" (36 x 173 x 41mm)


 3.8oz (110g)


                Call (732) 632-6400 for Options & Accessories

Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account