The 1.3% MC red banded canister indicates the major capsaicinoid level which is discharged at the nozzle at time of use The MK-4 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 MK-4 is an ideal size for patrol officers to wear on a duty belt and will deliver 20-25 short bursts of OC at an effective range of 10-12 ft. This 1.3% MC OC aerosol product features a 360? gel delivery method which allows the aerosol projector to disperse OC from any angle while providing a target-specific, strong concentrated gel stream for greater standoff and reduced cross contamination.