The ultrasonic tub is designed for washing medical, dental, cosmetic and veterinary fields used instruments that requires an ultrasonic washing. It allows thorough cleaning of places that are difficult to reach by manual cleaning by involving ultrasound cleaning (via cavitation), without the risks from unsafe handling of contaminated equipment. The device proceeds to the heating phase of the detergent and stops automatically when preset temperature is reached. During ultrasonic cleaning, detergent temperature tends to rise independently. Ultrasonic phases activate intermittently which reduces gas dissolved in liquid and improves efficiency of washing. The cleaning is more efficient due to improved cavitation.