Temperature-control device having a reaction vessel

A temperature-control device for receiving a sample, comprising:

• a housing defining a heat-insulated interior space;
• a heat-insulating cover configured to cover the interior space;
• a reaction vessel, said reaction vessel comprising a hollow body and a cap, said hollow body being symmetrical with respect to an axis of symmetry and closed on one side by a base;
• a lid made of a heat-conducting material and configured to cover the reaction vessel and contact the cap;
• a heating block disposed in said interior space and configured to actively heat the reaction vessel, said heating block having an inner surface which is adapted to the base of the reaction vessel and contacts the reaction vessel as to heat a sample located therein;
• and
• a heating body, which surrounds and contacts at least a portion of the hollow body, disposed in the interior space and configured to actively heat to the reaction vessel, the heating body adapted to the shape of the hollow body and in thermal communication with the lid via a heat-conducting contact region therebetween such that, in operation, the heating body heats the hollow body directly and heats the cap indirectly via the lid, wherein said lid includes a hole therethrough configured to enable a body to be introduced into the hollow body through the cap.