Ultra-Etch IndiSpense Syringe Refill, 30 mL. 35% Phosphoric Acid Gel. Easy placement and rinsing - distinctive blue color enhances placement and ensures complete removal. Ideal viscosity - thixotropic properties ensure precise placement without migrating, even on vertical surfaces. Enhanced capillary action - penetrates the smallest fissures on occlusal surfaces. Peace of mind - unique self-limiting chemistry prevents overetching, creating the optimal surface to receive resin. 30 ml bulk syringe