Abstract: Disclosed is an apparatus for the sensor-based examination of biological cells, comprising at least one well, wherein the at least one well has (a) an opening; (b) a planar base; (c) at least one sensor for the examination of biological cells, wherein the at least one sensor is arranged on the base of the at least one well; and (d) a medium for cryopreservation, with the medium for cryopreservation comprising biological cells and contacting a surface of the at least one sensor, wherein the medium for cryopreservation, which comprises the biological cells, is present in a frozen state.

Abstract: A method for producing an apparatus for the sensor-based examination of biological cells is presented. The method comprises equipping at least one sterile vessel, which has an opening and a base which is planar at least in certain regions, with at least one sensor for examining biological cells. After the sterile vessel has been equipped with the sensor, a liquid cryopreservation medium, which contains biological cells, is applied to a surface of the at least one sensor in the at least one vessel. The liquid cryopreservation medium, which contains biological cells, is then frozen. An apparatus produced in this manner allows a more economical and less error-prone sensor-based examination of biological cells and the transport and storage thereof in said apparatus until the time of examination. Uses of the apparatus are proposed.