The new BioSonic Ultrasonic Cleaning Unit 125 delivers a variety of customized options for the dental practice. The time of the cleaning cycle can be selected individually. Additionally, a countdown timer is available to inform the user of the amount of cleaning time remaining, and indicate exactly when the instruments will be ready for sterilization. This new cleaning unit is also equipped with a solution tracking function to inform the user how long the solution has been in use, so that mandatory changing of the cleaning solution will not be forgotten. With a simple touch of a button, degassing of the solution, i.e. air entrapments which hinder the cleaning process, will disappear. Note that degassing is required every time a new solution is added. A comprehensive range of accessories and BioSonic cleaning solutions provide the user with flexibility to efficiently clean and disinfect instruments, prostheses, and other items throughout the dental practice.