A modular floorstanding centrifuge comprising at least the following modules, the modules being preassembled, coherent components capable of being mounted as a whole, including a floor plate, a wall module adapted to be mounted on the floor plate together with two side wall elements capable of being attached to opposing edge regions of the floor plate, and a ceiling element adapted to interconnect the side wall elements, and a guard ring module adapted to be mounted on the wall module and comprising a guard ring attached to at least one side wall element and/or a ceiling element, wherein the ceiling element and the at least one side wall element are joined together and the at least one side wall element is mounted on the ceiling element such that it is capable of being attached to an edge region of the ceiling element pertaining to the underlying wall module.