Institut Fur Mikrotechnik Mainz Gmbh

Johann Wolfgang Goethe-universitaet

Frithjof Von Germar

Heribert Offermanns

Jan Claussen

Rainer Gransee

Klaus-Stefan Drese

Frank Doffing

Oliver Klein

Christian Zscherp

Andreas Barth

Stephan Wittayer

Hermann Von Lillienfeld-Toal

Susanne Selzer

Hellmuth Von Prollius

Werner Mäntele

Jean-Michel Mehietang

Christiane Krempel

Dalibor Dadic

A microfluidic arrangement for extracting and optionally processing an extract from a sample and for transferring the extract in flowable form to a microfluidic chip using an extractor with a compressible extraction chamber and at least one opening thereof, a reactor that has a reaction chamber, an inlet opening that communicates with the at least one opening of the extractor, wherein the two openings define a flow path between the chambers, an outlet opening for fluidically connecting to the microfluidic chip and a ventilation opening of the reaction chamber, and having a filter arrangement installed in the flow path between the extractor and the reactor. A lab-on-a-chip system with such a microfluidic arrangement and a microfluidic chip that is rigidly connected to the reactor.

Microfluidic extraction and reaction device

The invention relates to an infrared measuring device, especially for the spectrometry of aqueous systems. Said device comprises at least one measuring unit, especially a measuring cell, also comprising at least one ATR-body and at least one infrared light source. The measuring unit contains at least one ATR-body which comprises at least two planar, substantially parallel limiting surfaces and which is transparent with respect to measuring radiation and which has an index of refraction which is greater than that of the medium which is arranged next to at least one limiting surface and which is to be examined, especially larger or equal to 1.5. The IR-measuring radiation on at least one of the planar, parallel limiting surfaces of the ATR-body can be totally reflected in an attenuated manner by at least six times.

Infrared measuring device, especially for the spectrometry of aqueous systems, preferably multiple component systems

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Mainz, Germany

Frithjof Von Germar