Sample container with - A main cylindrical body and a screwable end part, - a sample chamber in the main body, which has a sample inlet which can be shut off via a closing valve and a displacement piston delimiting the sample chamber, - a displacement chamber (12, 54) in the main body, which has an outlet which can be shut off via an outlet valve, the displacement chamber (12, 54) being separated from the sample chamber by the reciprocating piston, and - a buffer chamber (14, 68, 69) which can be connected to the displacement chamber (12, 54) via an outlet which can be shut off by a connecting valve and which can be filled by an inlet channel with an inlet valve, - the buffer chamber (14, 68, 69) having a cylindrical shape, which in a section adjoining the main body is delimited radially outwards by an inner wall of the main body, a displacement medium is provided in the displacement chamber (12, 54) and is displaced when the outlet valve is opened and a buffer medium is provided in the buffer chamber (14, 68, 69) which enters the displacement chamber (12, 54) when the connecting valve is opened and acts on the sample chamber via the floating piston, characterized in that - the end part screwed onto the main body protrudes in longitudinal direction beyond it, - wobei die Pufferkammer (14, 68, 69) einen ersten Abschnitt und einen zweiten Abschnitt besitzt, wobei der erste Abschnitt die von der Innenwand des Grundkörpers begrenzte Außenwand und einen an dem Grundkörper ausgebildeten Grund aufweist und endseitig in dem zweiten Abschnitt der Pufferkammer (14, 68, 69) übergeht, der von einer Innenwand des Endteils entlang seiner Umfangswand begrenzt ist und - wherein inlet, outlet and connecting valve are arranged in the screwable end part which has a connecting piece in which a channel connects the displacement chamber (12, 54) with the outlet valve and the free end of which has an external thread with which a screw connection with the main body is effected. - A main cylindrical body and a screwable end part, - a sample chamber in the main body, which has a sample inlet which can be shut off via a closing valve and a displacement piston delimiting the sample chamber, - a displacement chamber (12, 54) in the main body, which has an outlet which can be shut off via an outlet valve, the displacement chamber (12, 54) being separated from the sample chamber by the reciprocating piston, and - a buffer chamber (14, 68, 69) which can be connected to the displacement chamber (12, 54) via an outlet which can be shut off by a connecting valve and which can be filled by an inlet channel with an inlet valve, - the buffer chamber (14, 68, 69) having a cylindrical shape, which in a section adjoining the main body is delimited radially outwards by an inner wall of the main body, a displacement medium is provided in the displacement chamber (12, 54) and is displaced when the outlet valve is opened and a buffer medium is provided in the buffer chamber (14, 68, 69) which enters the displacement chamber (12, 54) when the connecting valve is opened and acts on the sample chamber via the floating piston, - the end part screwed onto the main body protrudes in longitudinal direction beyond it, - wobei die Pufferkammer (14, 68, 69) einen ersten Abschnitt und einen zweiten Abschnitt besitzt, wobei der erste Abschnitt die von der Innenwand des Grundkörpers begrenzte Außenwand und einen an dem Grundkörper ausgebildeten Grund aufweist und endseitig in dem zweiten Abschnitt der Pufferkammer (14, 68, 69) übergeht, der von einer Innenwand des Endteils entlang seiner Umfangswand begrenzt ist und - wherein inlet, outlet and connecting valve are arranged in the screwable end part which has a connecting piece in which a channel connects the displacement chamber (12, 54) with the outlet valve and the free end of which has an external thread with which a screw connection with the main body is effected.