Roche Diagnostics Operations, Inc.

F. Hoffmann-la Roche Ag

Roche Diagnostics Gmbh

Marie-Luise Schinnerl

Christoph Ritter

Bernhard Schaffar

Helmut Offenbacher

Heinz Kontschieder

Wolfgang Huber

Marco Jean Pierre Leiner

Johann Harer

Franz-Josef Krysl

Gregor Steiner

Marco Jean-Pierre Leiner

Franz Josef Krysl

The invention concerns a sensor cassette that can be inserted into an analyzer comprising a continuous measuring channel for receiving fluidic media and sensory elements for determining chemical and/or physical parameters of the fluidic media. According to the invention the sensor cassette consists of at least two permanently connected but separately manufactured modules which each have a housing and a measuring channel section wherein the measuring channel sections of adjacent modules are connected to the continuous measuring channel by a fluidic coupling and wherein at least one of the connected modules is designed as a sensor module and has a sensor array comprising at least two sensory elements. Furthermore, a memory element is allocated to the sensor cassette on which specific information for the sensor cassette in particular with regard to its construction from the respective modules is stored.

Modular sensor cassette

An electrochemical sensor includes an electrochemically active sensor layer (sensor spot), which is applied by means of thick film techniques in at least one region of an electrically insulating, planar substrate, the surface of the sensor layer being brought into contact in a measuring area with the aqueous sample to be determined. At least one conductive path for signal pick-up is also applied on the substrate by means of thick film techniques. The sensor layer contains at least one oxide of metal from subgroups and wof the Periodic Table as sensor component. The contact between the electrochemically active sensor layer and the conductor is effected via an electrically conductive bridge layer which extends from the measuring area in a direction essentially parallel to the surface of the substrate. The bridge layer consists of corrosion-resistant material.

Electrochemical sensor

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Semriach, Austria

Marie-Luise Schinnerl