Our company has developed consumer microbubble adapters, such as showerheads that utilize microbubbles and microbubble generators for washing machines that reduce odors from the back of drums and clothing. Recently, through a project involving four companies, including our company, the Tokyo Small and Medium Enterprise Promotion Corporation/Tama Branch and Professor Ninomiya from Nihon University of Technology, it has been found that microbubbles are effective in reducing odors from cutting fluids and maintaining the emulsion state of cutting fluids. Moreover, while many devices for generating microbubbles are pressure-dissolution types that add air, which can promote oxidation and increase the likelihood of rust, our device microbubbles the air contained in tap water, which tends to reduce oxygen and lower the dissolved oxygen (DO) levels. Therefore, it can be said to be optimal for cutting fluids used in machining and cutting. We also believe it can be utilized in inline static mixers.