Abstract: A process for operating a pump, the pump having a conveying chamber for conveying a fluid, the pump having a displacement element, the displacement element delimiting the conveying chamber at least in sections, so that a change in the position or location of the displacement element causes a change in the volume of the conveying chamber, the pump having a drive, the drive having a coil through which an electric current is conductible, the coil having an ohmic resistance value RDC and an inductance Lcoil, the drive includes a pressure element and a coupling device, the pressure element and the coil being configured and arranged such that a magnetic field, generated by an electric current flowing in the coil causes a stroke movement of the pressure element along a longitudinal axis from an initial position P1 to an end position P2.

Abstract: An apparatus is described for treating prepared specimens. The apparatus comprises at least two container rows arranged in parallel to each other, each comprising a plurality of reagent containers and a transport mechanism for transporting at least one transport container that receives at least one carrier holding at least one prepared specimen. The transport mechanism is movable along an X and Z axis. A rotation unit is provided comprising holding arms and at least one holding element. The container rows are received rotatably at the ends of the holding arms of the at least one holding element that is connected to a rotation shaft such that it co-rotates with the rotation shaft that extends parallel to the X axis. The rotation unit is adapted to assume at least one working position allowing the transport mechanism to have access to the reagent container.

Abstract: An apparatus is described for treating prepared specimens. The apparatus comprises at least two container rows arranged in parallel to each other, each comprising a plurality of reagent containers and a transport mechanism for transporting at least one transport container that receives at least one carrier holding at least one prepared specimen. The transport mechanism is movable along an X and Z axis. A rotation unit is provided comprising holding arms and at least one holding element. The container rows are received rotatably at the ends of the holding arms of the at least one holding element that is connected to a rotation shaft such that it co-rotates with the rotation shaft that extends parallel to the X axis. The rotation unit is adapted to assume at least one working position allowing the transport mechanism to have access to the reagent container.