| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of adding a defoaming agent capable of simply improving the degree of foaming suppression obtained for the addition amount of the defoaming agent. <P>SOLUTION: The method of adding a defoaming agent to a liquid L capable of generating foam formation includes a process of quantitatively detecting the level of the foam formation on the liquid level of the liquid L by using a non-contact type detection means 40 located away from the liquid level, and adjusting the addition amount of the defoaming agent based on the level of the foam formation quantitatively detected. It is preferable that the quantitative detection includes one or more types of detection selected from a group including the minimum value of the height of the liquid level, and a height difference between the maximum value and the minimum value of the height of the liquid level. <P>COPYRIGHT: (C)2012,JPO&INPIT |
