A MICROFLUIDIC SYSTEM (EDI)

摘要

A microfluidic device in form of a disc comprising an MS-port for presentati on of an MS-analyte to the EDI-MS apparatus, said MS-Port (a) being a part of a microchannel structure (I) comprising and inlet port for a sample,a nd (b) comprising an EDI-area which comprises a conductive layer (I) and (b) an EDI - surface from which the MS-analyte is to be desorbed/ionised. The device is characterized in that layer (I) has a conductive connection and/or that ther e is a calibrator area in the proximity of each of said one, tow or more MS- ports. In a typical varient the MS-port is in the form of a depression that is in fluid communiciaotn with upstream part of microchannel structure (I).