Sorption filter, having a sorption agent which is designed as a unidirectionally flowed-through sorption agent moulded body for sorption filtering of a raw gas, and a sensor unit for monitoring the loading state of the sorption agent, wherein - the sorption agent moulded body has an inflow surface (3.1) for introducing the raw gas to be filtered and an outflow surface (3. 2) for discharging a clean gas formed from the raw gas after sorption filtering, wherein the smallest distance in the direction of flow in the sorption agent flowed through between the inflow surface (3.1) and the outflow surface (3.2) defines a flow depth (d) of the sorption agent moulded body, and - an adsorption zone formed in the sorption agent moulded body transversely to the direction of flow between loaded sorption agent (2.2) and unloaded sorption agent (2.1) during the flow and loading is separated from the unloaded sorption agent (2.1) by an absorption front, wherein the largest distance in the direction of flow between the inflow surface (3.1) and the adsorption front defines an instantaneous loading depth (b) of the sorption agent moulded body, characterised in that - the sensor unit has a sensor sorption mould element consisting of a sensor sorption agent, which is held and contacted in an enclosure on at least two opposite sides of the sensor sorption mould element, the enclosure being set up to couple mechanical vibrations into the sensor sorption mould element and to couple them out for signal detection, - the sensor unit further comprises a control and evaluation unit which is connected to the enclosure of the sensor sorption mould element in terms of signalling technology for time-resolved processing and evaluation of the detected mechanical vibrations, wherein the sensor unit has a mechanical vibration exciter, by means of which mechanical vibrations can be coupled into and out of the sensor sorption mould element held in the enclosure, and wherein the sensor sorption mould element held in the enclosure is designed in the form of a vibration platelet, - the sensor sorption mould element in the form of a vibration platelet is held in the enclosure with exposed plate surfaces of the vibration platelet on at least two opposite sides lying perpendicular to the plate surfaces of the vibration platelet and perpendicular to the plate surfaces of the vibration platelet, - the control and evaluation unit is set up to output a warning signal if the time-resolved processed and evaluated values of the detected mechanical vibrations exceed or fall below a predetermined limit value over time, - the sensor sorption agent is designed and/or selected in such a way that the exceeding or falling below of the limit value leading to the output of the warning signal corresponds to a predetermined, maximum permissible loading depth (b max) of the sorption agent moulded body. - the sorption agent moulded body has an inflow surface (3.1) for introducing the raw gas to be filtered and an outflow surface (3. 2) for discharging a clean gas formed from the raw gas after sorption filtering, wherein the smallest distance in the direction of flow in the sorption agent flowed through between the inflow surface (3.1) and the outflow surface (3.2) defines a flow depth (d) of the sorption agent moulded body, and - an adsorption zone formed in the sorption agent moulded body transversely to the direction of flow between loaded sorption agent (2.2) and unloaded sorption agent (2.1) during the flow and loading is separated from the unloaded sorption agent (2.1) by an absorption front, wherein the largest distance in the direction of flow between the inflow surface (3.1) and the adsorption front defines an instantaneous loading depth (b) of the sorption agent moulded body, characterised in that - the sensor unit has a sensor sorption mould element consisting of a sensor sorption agent, which is held and contacted in an enclosure on at least two opposite sides of the sensor sorption mould element, the enclosure being set up to couple mechanical vibrations into the sensor sorption mould element and to couple them out for signal detection, - the sensor unit further comprises a control and evaluation unit which is connected to the enclosure of the sensor sorption mould element in terms of signalling technology for time-resolved processing and evaluation of the detected mechanical vibrations, wherein the sensor unit has a mechanical vibration exciter, by means of which mechanical vibrations can be coupled into and out of the sensor sorption mould element held in the enclosure, and wherein the sensor sorption mould element held in the enclosure is designed in the form of a vibration platelet, - the sensor sorption mould element in the form of a vibration platelet is held in the enclosure with exposed plate surfaces of the vibration platelet on at least two opposite sides lying perpendicular to the plate surfaces of the vibration platelet and perpendicular to the plate surfaces of the vibration platelet, - the control and evaluation unit is set up to output a warning signal if the time-resolved processed and evaluated values of the detected mechanical vibrations exceed or fall below a predetermined limit value over time, - the sensor sorption agent is designed and/or selected in such a way that the exceeding or falling below of the limit value leading to the output of the warning signal corresponds to a predetermined, maximum permissible loading depth (b max) of the sorption agent moulded body.