Method for the sanification of an apparatus for metering powders (11), comprising a metering chamber (14) and a metering device (13) for powders (11), housed in the metering chamber (14) and configured to deliver a suitable quantity of powders (11) to one or more containers (41) located downstream of the metering device (13). The sanification method comprises a step of washing the metering device (13) and a subsequent step of sterilizing the latter and/or the metering chamber (14).