● Model: PM100-20 (PM10020) SANEI 【Excellent Cleaning Power】Generates approximately 61 million ultra-fine bubbles per mL. These ultra-fine bubbles penetrate deep into dirt, removing it effectively. 【Noticeable Difference with Repeated Washing! See the difference in residue removal.】Compared to washing with normal water, ultra-fine bubble water reduces residue by 59%! ※ As a simulated stain, a water-soluble liquid with dissolved protein was colored and applied to gauze cloths. After 2 hours, the cloths were washed in a washing machine (standard course) with 1/10 of the standard amount of detergent, and dried. The simulated stain was then reapplied to the same areas and washed. This process was repeated 10 times, and the remaining dirt on the cloths was quantified through image analysis.