A sterilized storage container comprising a container cover (12) is held open by a support plate (18) on which is fixed a chamber (20) which expands at a predetermined point during the sterilization cycle to react against the cover , so as to move the plate to the outside to allow the lid to fall on the base of the container. A seal (16) elastic prevents any fluid flow in the container after the lid is falling, while allowing fluid flow out through the seal when the internal pressure exceeds the external pressure. When the container is to be opened, a valve (60) allows decompression to eliminate the effect of the vacuum within the container and to filter air into the vessel at that time. In this way, the container is hermetically closed during the sterilization way as items in the interior can be stored in asceptiques conditions. These prevent the eventuality of recontamination when articles are removed in the autoclave and stored according to the practice of the prior art does not provide storage container that can be closed tightly for the items.
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