Contactless conductivity detection is also suitable for detection in lab-on-chip devices. The capacitively coupled electrodes can be placed underneath the chip, so that it is not necessary to incorporate these during the production of the devices.

Schematic drawing of an electrophoresis chip with the external electrodes for contactless conductivity detection and their support.

Photograph of the detector end of the chip.

Fast separation of inorganic ions on a chip.