Wall Mount Thermohygrometer
from Oakton Instruments

Waterproof Microprocessor TDSTestrs and ECTestrs

Feature push-button calibration and high ±1% full scale accuracy!

  • Waterproof, dustproof housing that floats is certifiable to IP67 standards

  • Replaceable sensor lets you reuse same meter body, saving you money

  • Hold function, Auto-Off

  • Automatic Temperature Compensation

Our waterproof microprocessor TDSTestrs and ECTestrs offer push-button calibration and ±1% accuracy in a rugged waterproof housing. Never worry about losing your tester in a pond or tank; these testers float!

Valox® housing and stainless steel electrodes offer good chemical compatibility. Replaceable sensors let you reuse meter body without losing waterproof protection.

Waterproof Microprocessor TDSTestrs and ECTestrs product bulletin
Waterproof Microprocessor TDSTestrs and ECTestrs manual
Tech tip: TDSTestr Comparison Chart

See a video demonstration of how to calibrate your Oakton TDSTestr

See how easy is it to replace the sensor on your Oakton Testr

Measures TDS or Conductivity
Range TDSTestr Low: 0 to 1990 ppm
TDSTestr High: 0 to 10.00 ppt
ECTestr Low: 0 to 1990 S
ECTestr High:0 to 19.90 mS
Resolution TDSTestr Low: 10 ppm
TDSTestr High: 0.10 ppt
ECTestr Low: 10 S
ECTestr High:0.10 mS
Accuracy 1% full-scale
Calibration One point push button
Waterproof/Dustproof (IP67) Yes
Electrode Replaceable
Operating Temperature 0 to 50C (32 to 122F)
Power Four 1.5 V batteries
Battery life 140 hours continous use
Dimensions 6.5" x 1.5" dia (16.5 cm x 3.8 cm dia)
Shipping weight 4.5 oz (125 g)


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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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