Sani-Tips Disposable Air/Water Syringe Tips, 250/Bag Sani-Tip is a single-use, 3:1 (A/W) syringe tip that is designed to deliver reliable dry air/water, while eliminating risks of cross-contamination for trouble-free restorations. Sani-Tip guarantees dry air every time when fitted to the appropriate adaptor, because of the special separate air and water channels. An adapter is available for most three-in-one syringes, including many older models.