Patent ID: 7959865

Claim:
Miniaturized gas chromatograph comprising at least one injector ( 1 ), one separation column ( 2 ) and a detector ( 3 ) wherein the injector ( 1 ), the separation column ( 2 ) and the detector ( 3 ) are combined on a circuit board ( 4 ) to give a gas chromatography module ( 5 ), and the injector ( 1 ) comprises a first sheet ( 6 ) with channels ( 12 ) and a second sheet ( 7 ) with channels ( 13 ) wherein the sheets may be displaced relative to each other, whereby at least one of the sheets ( 6 , 7 ) is provided with a layer ( 8 ) of plastic on the side of the sheet facing the other sheet ( 7 , 6 ), wherein the layer ( 8 ) of plastic is a plasma polymerized layer, further comprising at least one heating element ( 10 ) configured such that one or more of the injector ( 1 ), the separation column ( 2 ) and/or the detector ( 3 ) can be temperature-controlled, and further comprising an electronic control and evaluation unit placed on the circuit board and a plurality of recesses ( 15 , 23 , 24 ) provided in the circuit board ( 4 ) such that the electronic control and evaluation unit ( 9 ) is protected from the heat emitted by the heating elements ( 10 ).