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 1.3% MC blue banded canister indicates the major capsaicinoid level which is discharged at the nozzle at time of use.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.