Water Sensor Detects Bacteria in Real Time, On Location

Oct-10-15 A water sensor from the startup SBT Aqua is able to instantly detect bacteria in water in the field, without the need to transport it to a lab.

The sensor, created by three former students from the Technical University of Denmark, is able to reach its rapid readings by taking advantage of a technique called impedance flow cytometry. The microfluidic device is equipped with electrodes that have been applied with a multi-frequency voltage signal. As the water flows continuously through the channels, any bacteria and particles will trigger a change in impedance. Because the impedance change for bacteria is unique in relation to other organic particles, the system is able to monitor both bacteria concentration and particle count in real time and with extreme accuracy.

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[DTU.DK]
[SBTAQUA.COM]

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