This vegetable-based dye is used to reduce vandalism and false alarms by identifying the culprits. A very small amount of this gel-like solution is placed on the handle of a pull station and when a culprit falsely pulls the station they will be identifiable immediately. The dye is designed to activate and spread with water. Therefore, when the culprit proceeds to wash the gel off their hands, EVERYTHING turns BLUE. The syringe applicator allows for clean application. One syringe covers approx. 40 - 50 pull stations (depending on the amount applied to each pull station). 10ml syringe.