PROBLEM TO BE SOLVED: To provide a mechanism which measures the time taken for reducing the inside of a sterilization container to a predetermined pressure in order to determine whether sterilization treatment can be conducted properly and can print the measurement result.SOLUTION: The inside of a sterilization container that stores the material to be sterilized is reduced to a predetermined pressure, the time taken for reducing the inside of the sterilization container to the predetermined pressure is measured, and the measurement result is printed.COPYRIGHT: (C)2015,JPO&INPIT【課題】適切に滅菌処理を実行可能か判定するために、滅菌コンテナ内が所定の圧力に減圧されるまでの時間を計測し、その計測結果を印刷可能な仕組みを提供すること。【解決手段】被滅菌物を格納する滅菌コンテナ内を所定の圧力まで減圧し、その所定の圧力に減圧されるまでの時間を計測し、計測結果を印刷する。【選択図】図15