E Plus Ultrasonic Bath with Pulse Mode for Mixing, Cleaning, and Degassing. Pulse mode boosts the ultrasonic power to remove tenacious contaminants such as mineral deposits and polishing pastes. Sweep mode produces a continuous slight variation of frequency to provide uniform and thorough cleaning of parts. The microprocessor-controlled generator in this sonic cleaner maintains constant ultrasonic power, sensing and adjusting for light or heavy loads in the tank. Digital operation with power tracking ensures reproducible performance from run to run. All models (except the EP10) have adjustable bath temperature from 30°C to 80°C. The control panel indicates when the set temperature has been reached. The timer can be set from 1-30 minutes or for continuous operation with manual shut off. The unit turns off automatically after 8 hours of continuous operation for safety. The 1.5 gallon unit and upwards have a rear drain with a valve on the side of the tank for easy access. The tank cover can be flipped over and used as a drip tray.