Patent ID: 7419836

Claim:
A device for observing reactions in samples, to which a reagent is added, the device comprising: a housing part ( 28 ); a first optical device ( 4 ) having a luminescence detector ( 30 ) for observing samples ( 2 ) in the direction of a first optical axis ( 5 ) and in a first observation region ( 6 ) penetrated by the first optical axis ( 5 ); a second optical device ( 14 ) having a fluorescence detector ( 31 ) for observing samples ( 2 ) in the direction of a second optical axis ( 15 ) and in a second observation region ( 16 ) penetrated by the second optical axis ( 15 ), wherein the two optical axes ( 5 ), ( 15 ) run in a substantially vertical Z direction and parallel to one another in opposite directions; and wherein the two observation regions ( 6 ), ( 16 ) are substantially coincident for detection of a luminescence and a fluorescence emitted by the sample ( 2 ), a first device ( 7 ) for receiving receptacles ( 8 ) containing samples ( 2 ) and for aligning samples in the receptacles in relation to the first and the second optical axes ( 5 ), ( 15 ); an injection device ( 10 ) for adding liquids ( 3 ) to samples ( 2 ), wherein the injection device ( 10 ) includes at least one injector opening ( 11 ) of an injector needle ( 12 ) positioned in the first or in the second observation region ( 6 ), ( 16 ) and at least one supply line ( 13 ) assigned to the injection needle; an illumination device ( 17 ) for irradiating samples ( 2 ) with excitation light of a first wavelength, wherein the injection device ( 10 ) includes a tray ( 24 ) for carrying and positioning the at least one injector needle ( 12 ) and its supply line ( 13 ); the tray ( 24 ) being directly attached to the housing part ( 28 ) of the device, and the tray ( 24 ) having the at least one injector needle ( 12 ).