Ultrasonic Cleaning is a device that is used for cleaning a wide variety of materials, including metals, glass, rubber, ceramics and some hard plastics. Ultrasonic cleaning is especially useful for removing tightly-adhered contaminants from intricate items with blind holes, cracks, and recesses. Examples of contaminants removed through ultrasonic cleaning include dust, dirt, oil, grease, pigments, flux agents, fingerprints and polishing compounds. The fluid used in industrial ultrasonic cleaning systems can be either water-based (aqueous) or solvent-based.