Microreactor for sensor used for measurement of small volume (20 µl) in closed system.

The sensor is formed on a corundum ceramic base. Onto this surface the working, the reference and the auxiliary electrodes are applied. The working and the reference electrodes are made of variety of materials. Active part of the sensor is placed in a small microreactor with lid.

At the end of the sensor there is a contacting field which is connected with the active part by the silver conducting paths which are covered by a dielectric protection layer. A bio-chemically active substance can be immobilised on the working electrode of the sensor to create a biosensor.