Ultrasonic Cleaners are designed to remove grease, dust or other contaminants from surfaces and cavities of small objects, parts and samples such as cuvettes, lenses, glassware, stainless steel instruments, metals and more. Simply place objects directly into the stainless steel tank or into a dipping basket, replace the transparent lid and press "on". The transducer generates thousands of minute cleansing bubbles which vibrate at a very high electrical frequency. When the vibration speed rises above the ultrasonic frequency level, bubbles explode and generate strong power, cleaning the surfaces and cavities of hard-to-clean objects. Ultrasonic cleaning does not scratch the surface or harm objects like many chemical or abrasive cleansers. Units operate quietly, powered by AC 100/120V. High Power Ultrasonic Cleaner 100004 includes a dipping basket and features 5 pre-programmed timing cycles with the remaining count-down time shown on a large bright LED. A cooling fan enables prolonged operation without overheating.