FLOW CELL

摘要

A flow cell (1) has in its interior a flow channel (2) and is provided with an inlet opening (3) for the sample and with an outlet opening (4). Also provided are means for producing a sample-free blocked volume located in the flow channel (2). Those means comprise, for example, a further inlet opening (5) for a reference fluid, that inlet opening (5) being so positioned that the reference fluid flows counter to the sample in the flow channel (2). The flow cell (1) is suitable for a sensor apparatus in which one of the boundary surfaces of the flow channel (2) comprises a detection layer that contains selectively sensitive recognition elements for an analyte. The flow cell (1) is also suitable for an optical detection device which preferably utilises luminescence excitation in the evanescent field of an optical waveguide.