The Extech EC400 ExStik® features six measurement units, internal memory that stores up to 15 labeled measurements for easy recall, an adjustable conductivity factor from 0.4 to 1.0, and self-calibration upon power-on. Read more.
Waterproof meter with one high accuracy multi-range sensor that measures four parameters:
Conductivity, TDS, Salinity, and Temperature
• 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 μS/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 bar graph 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
• EC400 includes meter and Conductivity cell*, protective sensor cap,
sample cup with cap, four CR2032 button batteries, and 48"(1.2m)
neck strap. Order Conductivity standards separately
• Optional EC410 kit includes EC400 ExStik® II
Conductivity/TDS/Salinity/Temperature Meter, with sensor, protective
cap, 84μS/cm, 1413μS/cm and 12880μS/cm calibration standards
(30mL bottle each), weighted base, 3 sample plastic cups with caps,
four 3V CR-2032 button batteries, 48" (1.2m) neck strap,
and carrying case
| Specifications | Ranges | Max. Resolution | Basic Accuracy |
| Conductivity | 0 to 199.9μS/cm 200 to 1999μS/cm 2.00 to 19.99mS/cm |
0.1μS/cm 1μS/cm 0.01mS/cm |
±2% FS |
| TDS | 0 to 99.9 ppm (mg/L) 100 to 999 ppm (mg/L) 1.00 to 9.99ppt (g/L) |
0.1 ppm (mg/L) 1ppm (mg/L) 0.01ppt (g/L) |
±2% FS |
| Salinity | 0 to 99.9 ppm (mg/L) 100 to 999 ppm (mg/L) 1.00 to 9.99ppt (g/L) |
0.1 ppm (mg/L) 1ppm (mg/L) 0.01ppt (g/L) |
±2% FS |
| Temperature | 32° to 149°F (0 to 65°C) | 0.1°F/°C | ±1.8°F/1°C |
| Power | Four CR2032 button batteries | ||
| Dimensions | 1.4 x 6.8 x 1.6" (36 x 173 x 41mm) | ||
| Weight | 3.8oz (110g) |
