Abstract: The invention relates to a checking and filling device for powder extinguishers, which is provided with a reversing device, a suction fan and a separator. Its separator has a filter for retaining the extinguishing powder sucked from a powder extinguisher. The suction side and the pressure side of the suction fan can be alternately connected with the outlet side of the filter and the air flow direction can be reversed by operating the reversing device. Apart from the aforementioned filter, a reversing filter independent thereof is associated with the separator and enables the reversed air to be filtered.