Patent ID: 8685345

Claim:
A multi-well plate having: a plurality of sample chambers ( 10 ), and an insert ( 11 ) that is fitted into at least one of the sample chambers ( 10 ) and which delimits the sample chamber ( 10 ) upwardly, so as to form a measurement space ( 22 ), when the insert ( 11 ) is in a state in which the insert ( 11 ) is fitted into the sample chamber ( 10 ), wherein the sample chamber ( 10 ) has: a hollow-cylindrical sample chamber sealing portion ( 14 ) with a continuous sealing surface ( 15 ), which sample chamber sealing portion ( 14 ) is adapted to a corresponding insert sealing portion ( 12 ) of the insert ( 11 ) with a likewise continuous sealing surface ( 16 ), in such a way that the insert sealing portion ( 12 ) and the sample chamber sealing portion ( 14 ) are connected to one another releasably and in a liquid-tight manner by means of a press fit; a stop ( 31 ) for the insert ( 11 ) for limiting the depth of penetration of the insert ( 11 ) into the sample chamber ( 10 ), against which stop ( 31 ) the insert ( 11 ) butts from above when being fitted into the sample chamber ( 10 ); and a continuous clearance ( 29 ) located between the stop ( 31 ) and the sample chamber sealing portion ( 14 ), the continuous clearance ( 29 ) forming a step between the stop ( 31 ) and the sample chamber sealing portion ( 14 ), which step is designed in such a way that fluid that is arranged in the measurement space ( 22 ) forms meniscuses on or in the continuous clearance ( 29 ) that assist in forming a seal between the sample chamber sealing portion ( 14 ) and the insert sealing portion ( 12 ).