Measuring cell for the examination of samples by means of electromagnetic radiation

A measuring cell for studying samples by means of electromagnetic radiation, which includes beam entry and exit windows, an optical mirror system, and a sample plate, wherein the measuring cell comprises flushing gas connections, a mirror system for recording DRIFT spectra, a sample plate having at least 3 spectroscopy chambers, which are fastened on the sample plate, which is connected via a receptacle to a rotating and lifting motor, by which the chambers can be moved horizontally and rotated into the beam path and aligned under the mirror optical unit, and wherein each of the chambers includes a substructure, a sample crucible, and a cover, wherein these 3 components are connected to one another gas-tight and are closed off in relation to the surroundings by means, the sample crucible is provided with a drilled hole, through which reaction gas is conducted from an external reactor connected to the measuring cell through the sample material and out of the chamber, and each chamber includes a cover having two cones in which windows transmissive to electromagnetic radiation, are inserted and are arranged so that incident radiation and radiation leaving the measuring cell can pass through these windows, wherein the cover includes a channel having a gas connection for introducing reaction gases from an external reactor into the chamber, and wherein the chamber includes a reaction gas outlet in the substructure of the chamber.