Solid state, calibration free, pH sensor for monitoring ocean acidification

The Challenge

Todays sensors do not meet the requirements for widespread reliable remote water monitoring. They have high maintenance overheads, are fragile and require frequent calibration to ensure accuracy. Most importantly they are unable to cope with low-salt, and/or low-buffered water.

The Solution

ANB Sensors Ltd. have identified a disruptive technology enabling cost effective, accurate and autonomous measurement of real-time pH without the need for frequent calibration.

Our innovative pH sensor is based on a voltammetric electrochemical technique which utilizes a pH responding molecule bound within a solid state matrix. This is combined with a novel means of verifying the performance of the reference electrode through an additional in-situ electrochemical measurement, making the sensor calibration free.

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Key Benefits of our Solid State pH Sensor

  • No Calibration required
  • Easy to use
  • Store wet or dry
  • onboard QAQC for smart sensing
  • Target accuracy +/- 0.02 pH
  • pH range 2-10
  • Measurement frequency 10 seconds