A method for performing maintenance on a chromatography column (1; 41) comprising the steps of: a) when maintenance is required, detaching a detachable joint (7; 63) between a bottom plate (5; 53) of the chromatography column and a stand (3; 43) on which the chromatography column is provided; b) attaching an adaptor (15; 59) provided in the chromatography system to any part of the chromatography column (1; 41) making it possible to lift the bottom plate (5; 53) from the stand (3; 43) with the adaptor (15; 59); and c) raising the adaptor (15; 59) and thereby also the bottom plate (5; 53) such that maintenance can be performed under the bottom plate (5; 53).