The ultrasonic cleaner appears to be a quality piece of equipment. I've only used it for one job so far, and it didn't do what I needed it to do. I was trying to clean an artwork made of plates of glass adhered together with clear epoxy. There were very small gaps between the glass that had accumulated dirt and debris and I was hoping this would remove it, but after three attempts, two with water and detergent and one with 1:1 water:ethanol, it did not remove the dirt. I guess I'll keep it and hopefully it will work on the next project.