PROBLEM TO BE SOLVED: To determine whether or not extraction of a liquid sterilization agent from a container is normal.SOLUTION: A sterilization device comprises: first extraction means second extraction means detection means for detecting a liquid sterilization agent extracted from a container by performing an extraction operation and determination means for according to a first detection result by the detection means, of the liquid sterilization agent extracted from the container in a first sterilization process for extracting the liquid sterilization agent from the container by the first extraction means, and a second detection result by the detection means of the liquid sterilization agent extracted from the container in a second extraction process for extracting the liquid sterilization agent from the container by the second extraction means after the first extraction process, determining whether or not extraction of the liquid sterilization agent from the container is normal.SELECTED DRAWING: Figure 9
