Sensor chip, for measurement of the redox potential in blood, has electrodes of different noble metals on a ceramic substrate within an insulation cladding

摘要

The measurement system, for electrochemical study in liquid media with small volumes, has a flat ceramic substrate (1) with a noble metal electrode (2) to measure redox potential. A further noble metal electrode (4), of the same or different material, is at the substrate together with a third metal electrode (3) where a poorly soluble salt adheres to the metal. The triple electrode measurement system is fitted with electrical conductor paths by a thick layer technology. The sensor chip is covered with an insulation cladding (5). The sensor chip is anchored between two plastics section of a sensor tongue pad, with a trough to take a sample droplet. The sensor array has a cable connection to a data processor and a universal serial bus (USB) interface for a current supply.