검화용 플라스크를 환류냉각기에 연결하여 30분간 가열한 후 냉각시키고 지시약으로 페놀프탈레인 용액을 3 방울 가하였다.
The saponification flask was connected to a reflux condenser, heated for 30 minutes, cooled, and 3 drops of phenolphthalein solution was added as an indicator.