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This paper describes a new contactless conductivity detector, whose electrodes are constructed of microchannels filled with solution of KCl - called pseudoelectrodes. The lab-on-a-chip microdevice was fabricated in poly(dimethylsiloxane) PDMS, using a moulding technique. The mould was made from a dry negative photoresist with a thickness of 50 μm. During the tests, the dimension! and arrangement of pseudoelectrodes' microchannels were evaluated. The analyte was pumped into the microchanneldoi:10.2478/mms-2013-0026 fatcat:3clxwnwwujditf3hgkewa26uha