Planar sensor for measuring a chemical parameter of a sample

摘要

Sensor for measuring a chemical parameter of a sample comprises ≥ 1 potentiometric or amperometric transducer and opt. an optical transducer, and ≥ 1 biological component, all deposited on a flat substrate in the form of "sensor spots" covered by a membrane which is heat-sealed around each spot. Each potentiometric or amperometric sensor spot is in contact with a conductive strip on the substrate surface, and the heat-seal is interrupted in the vicinity of this strip. Also claimed are: (1) a process for producing such sensors by depositing a conductive strip on the substrate; depositing an amperometric or potentiometric transducer layer at one end of the strip; depositing ≥ 1 biological component on the transducer; covering at least the transducer and surrounding area with a membrane and heat-sealing the membrane to the substrate around the transducer, except in the vicinity of the strip, and (2) a process as above where the transducer and biological component(s) are immobilised in or on a polymer matrix deposited at the end of the strip.