The 1.47 oz. MK-3 canister will deliver 10-12 short bursts of OC at an effective range of 10-12 ft.? The foam delivery method is a powerful and fast-acting foam that coats the face upon contact.? The green canister represents the inert training units which duplicate the delivery system for live products.? The MK-3 is an ideal size for patrol officers to wear on a duty belt. This formulation has been tested and is non-flammable and Electronic Discharge Weapon (EDW) safe. Defense Technology First Defense OC Aerosols are produced in an ISO rated manufacturing facility. All Major Capsaicinoid percentages (MC%) are verified by an Independent Laboratory for quality assurance. The First Defense Inert formulation provides the same functionality and targeting properties as active product duplicating the delivery system for training purposes.?The MK-3 will deliver 10-12 short bursts of OC at an effective range of 10-12 ft. This inert aerosol product utilizes a foam delivery method providing a powerful and fast-acting foam that coats the face upon contact.