PROBLEM TO BE SOLVED: To provide means for effectively washing a used "sevoflurane storage container" without using expensive sevoflurane as a washing liquid.SOLUTION: A washing method includes: a step (step A) of securing a state in which at least sevoflurane vapor is present in a sevoflurane storage container a step (step B) of bringing a "liquid containing water as a major component" into contact with an inner wall of the sevoflurane storage container in a state in which the sevoflurane vapor is present in the sevoflurane storage container, and draining the liquid to the outside of the storage container in a liquid state, after the step A and a step (step C) of circulating a drying gas in the storage container and draining the liquid remaining on the inner wall of the storage container to the outside of the storage container together with the drying gas, after execution of the step B.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】高価なセボフルランを洗浄液とせずに、使用済みの「セボフルラン貯蔵容器」を効果的に洗浄することのできる手段を提供する。【解決手段】セボフルラン貯蔵容器内に、少なくともセボフルランの蒸気が存在する状態を確保する工程(第A工程)と、その後、セボフルランの蒸気が貯蔵容器内に存在する状態で、「水を主成分とする液体」を、セボフルラン貯蔵容器の内壁に接触させ、液体を、液状にて貯蔵容器外に排出させる工程(第B工程)と、第B工程を実施した後、貯蔵容器内に乾燥気体を流通させ、貯蔵容器内壁に残った液体を、乾燥気体と共に、貯蔵容器外に排出させる工程(第C工程)とを含む、洗浄方法。【選択図】図1
