The invention relates to an anesthesia station (1) for at least one laboratory animal, comprising an anesthesia area (2) connected to at least one peripheral (3 4) receiving the laboratory animal, said anesthesia area (2) being able to supply said peripheral (4, 4) with halogenated anesthetic gases, means for aspirating the halogenated gases from the peripheral, at least one filter (302, 402) having a determined organohalogen concentration retention capacity, said filter (302, 402) being arranged in such a way as to be crossed by the halogenated anesthetic gases from the peripheral (3, 4) during the operation of the aspiration means, and a system for the automatic determination in real-time of the organohalogen saturation rate (302, 402) of the filter.
