The invention relates to a laboratory device, in particular to a peristaltic pump, having an accessory part, in particular a pump head, that is removably arranged at the laboratory device; and having an apparatus for an automatic recognition of the accessory part from a plurality of accessory parts, in particular mutually different pump heads, removably arrangeable at the laboratory device, wherein the recognition apparatus has a coding at the accessory side and a detection unit for detecting the coding at the laboratory device side.