SENSOR DEVICE

摘要

A sensor device (1) for detecting a predetermined component present in a fluid sample (6) and providing an output representative thereof. The device (1) comprises a permselective membrane (2) incorporating a charged organic species. The membrane (2) is at least partially impermeable to charged substantially non-lipophilic species that may be present in the sample. The sensor (1) further incorporates an electrode arrangement (3, 4) in intimate contact with the membrane (2) but not exposed to the side thereof to be presented to the fluid sample (6).