PROBLEM TO BE SOLVED: To provide a tabletop sterilizer capable of rapidly coping with steam leakage on-site even in emergency.SOLUTION: There is provided a tabletop sterilizer 10 which comprises a body 100, a chamber 501 arranged in the body 100, a door 200 rotatably arranged to the body 100, a lid part 401 which closes the chamber 501 when the door 200 is closed and a lid supporting mechanism 400 for supporting the lid part 401 on the door 200. The lid supporting mechanism 400 comprises position adjustment means capable of displacing the lid part 401 in the thickness direction of the door 200.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】緊急時にも現場で素早く蒸気漏れに対応可能な卓上型滅菌器を提供する。【解決手段】卓上滅菌器10は、本体100と、本体100に配されたチャンバ501と、本体100に対して回動可能に配された扉200と、扉200が閉じられるとチャンバ501を閉塞する蓋部401と、蓋部401を扉200に支持させる蓋支持機構400と、を備える。蓋支持機構400は、扉200の厚み方向に蓋部401を変位可能な位置調節手段を備える。【選択図】図2