ZEN SONIC CLEANERThis ultrasonic cleaner from Zen makes it that much easier to clean your glass and pipes! Using plain tap water and a 750ml stainless steel tank, this cleaner uses ultrasonic technology at a 42,000 Hz frequency to get your array of glassware sparkling again. With an easy to read display and 5 digital settings to use, this cleaner will get the job done with ease.