Measurement of ultra fine bubble using laser diffraction method

Abstract

Recently, ultra fine bubble (UFB) technology is applied in a variety of field (washing, agriculture, fishing industry, etc.). However, since UFB measurement is not currently established, it is difficult to determine the effects caused by UFB. Especially, real UFB sample contains particle and bubble, usually the total amount are detected in the measurements. So the UFB concentration may be overestimated. In this paper, a laser diffraction method was used for UFB measurements. It is appeared the temperature history strongly effects to the dissolved gas concentration at UFB measurements. I will show some check point, the reliability of UFB concentration is correct and exact value or not.