Sensor to Detect Bacteria in Flowing Water

A number of biological tests are performed to determine whether the water we drink is clean or not. You won't know if the water supply is clean until you get the results. A recently developed sensor by a group of students from the Danish Technical University can simultaneously identify harmful bacteria in water. The technique developed by the techno-company SBT Aqua measures the impedance of flow cytometry. In this way, liquid is continuously passed through the microfluidic channel.

The channels have electrodes, which are applied to the multi voltage electrical signal. When the bacteria and other particles pass through the electrodes, the change in the impedance is detected by the sensor. Because the impedance of bacteria is different from other waterborne particles, it is possible to make real-time readings depending on the sample. In fact, this difference in impedance is changing from bacteria to bacteria. SBT claims that this technology can detect bacteria in water simultaneously. For this purpose, interconnected water test stations that do not require human analysis can be installed in different locations using hand-held devices. If the contamination flow in the network is monitored, harmful bacteria can be detected and the alarm state can be changed. Ece I believe that our product (sensor) will fundamentally alter microbiological water quality analysis,  says Erik Gustav Skands, CEO of the SBT-Aqua initiative.


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