The present invention relates to a safety workbench, in which, for the purpose of calibrating the safety workbench before beginning regular operation, a device control unit is implemented to cause measurement means to ascertain an actual measured value, which is representative of a flow velocity achieved at normal fan performance, an analysis unit is implemented to compare the actual measured value to a starting setpoint value and, in case of an established deviation, to correct a stored starting limiting value in accordance with the deviation, or means for controlling the fan are implemented to operate the fan at a fan performance corresponding to a stored starting limiting value, a device control unit is implemented to cause the measurement means to ascertain an actual limiting measured value which is representative of the flow velocity achieved at the set fan performance, and a storage unit is implemented to store the actual limiting measured value as the corrected limiting value. Furthermore, the present invention relates to a corresponding calibration method.