An automated laboratory system for automatically handling laboratory samples, comprising • a work area, • multiple predefined workstations for laboratory items in the work area that have a format adapted to the footprint of a standardized microtiter plate, • at least one movement device for moving tools above the work area, • at least one transport tool that can be moved by means of the movement device in order to relocate laboratory items in the work area, • at least one pipetting tool that can be moved by means of the movement device in order to pick up and release pipette tips and to take up and dispense liquids by means of the pipette tips in the work area, • a holder (9.1, 9.2) for pipette tip carriers, characterized in that • the holder (9.1, 9.2) for pipette tip carriers comprises at least one carrying apparatus having a rectangular through-opening and a support apparatus connected to the carrying apparatus, • wherein the holder (9.1, 9.2) with the support apparatus is placed on the work area next to a pipette tip carrier mounted on a workstation, such that the carrying apparatus is arranged above the pipette tip carrier, which has a footprint adapted to the footprint of the standardized microtiter plate, pipette tips can be picked up from the pipette tip carrier mounted below the carrying apparatus through the through-opening of the carrying apparatus by means of the pipetting tool and a pipette tip carrier that has a footprint adapted to the footprint of the standardized microtiter plate can be mounted on the carrying apparatus, and • in that the automated laboratory system comprises an electronic control apparatus that is connected to the movement device and that is designed to control the movements of the transport tool and of the pipetting tool by means of the movement device such that pipette tips can be picked up from the pipette tip carrier mounted on the carrying apparatus by means of the pipetting tool, the pipette tip carrier can be taken off the carrying apparatus by means of the transport tool and pipette tips can be picked up from the pipette tip carrier mounted below the carrying apparatus through the through-opening of the carrying apparatus by means of the pipetting tool. • a work area, • multiple predefined workstations for laboratory items in the work area that have a format adapted to the footprint of a standardized microtiter plate, • at least one movement device for moving tools above the work area, • at least one transport tool that can be moved by means of the movement device in order to relocate laboratory items in the work area, • at least one pipetting tool that can be moved by means of the movement device in order to pick up and release pipette tips and to take up and dispense liquids by means of the pipette tips in the work area, • a holder (9.1, 9.2) for pipette tip carriers, • the holder (9.1, 9.2) for pipette tip carriers comprises at least one carrying apparatus having a rectangular through-opening and a support apparatus connected to the carrying apparatus, • wherein the holder (9.1, 9.2) with the support apparatus is placed on the work area next to a pipette tip carrier mounted on a workstation, such that the carrying apparatus is arranged above the pipette tip carrier, which has a footprint adapted to the footprint of the standardized microtiter plate, pipette tips can be picked up from the pipette tip carrier mounted below the carrying apparatus through the through-opening of the carrying apparatus by means of the pipetting tool and a pipette tip carrier that has a footprint adapted to the footprint of the standardized microtiter plate can be mounted on the carrying apparatus, and • in that the automated laboratory system comprises an electronic control apparatus that is connected to the movement device and that is designed to control the movements of the transport tool and of the pipetting tool by means of the movement device such that pipette tips can be picked up from the pipette tip carrier mounted on the carrying apparatus by means of the pipetting tool, the pipette tip carrier can be taken off the carrying apparatus by means of the transport tool and pipette tips can be picked up from the pipette tip carrier mounted below the carrying apparatus through the through-opening of the carrying apparatus by means of the pipetting tool.