The Department of Defense (DoD) is seeking proposals for the development of a Blister Chemical Warfare Agent Disclosure Spray System. The objective of this project is to create a system that can visually disclose the location of blister chemical warfare agent (CWA) contamination on surfaces. The system should be able to identify levels of blister CWA below 0.01 g/m2 and enable visual mapping of the contamination in less than 5 minutes. The color change indicating the presence of blister CWA should remain visible for at least 10 minutes. The system should be a small handheld sprayer that does not require an external power source and weighs less than 5 pounds. It should also be able to operate in temperatures ranging from 0-45 °C and cover at least 50 square feet of surface. The system should not interfere with standard DoD detectors or create hazards when exposed to standard decontaminants. The project will be conducted in three phases: proof of concept, system feasibility, and prototype optimization. The technology developed in this project will have applications for both military decontamination operations and civilian incidents involving hazardous materials.