Which device is NOT specifically designed to ensure water quality during oral surgical procedures?

The air-water syringe is primarily designed to deliver both air and water during dental procedures, such as rinsing and drying the treatment area. While it plays an important role in enhancing visibility and comfort during procedures, it is not specifically designed to ensure water quality. Its main function is to accurately mix the two elements for optimal delivery to the patient.

In contrast, devices such as sterilizable tubing are specifically designed to maintain and ensure water quality by preventing contamination and allowing for proper cleaning and sterilization between uses. Similarly, single-use disposable products minimize the risk of cross-contamination and guarantee that any water delivered is free from pathogens. A bulb syringe can also help in delivering water, but its design aims more at ease of operation rather than specifically ensuring the quality of water during surgical procedures.

Hence, the air-water syringe stands apart as it does not have a dedicated function centered on maintaining water quality during oral surgical procedures.