The MK-4 canister size delivers a 1.3% MC% non-flammable and Electronic Discharge Weapon (EDW) safe formula. The First Defense� 360� system delivers a consistent stream pattern at any angle and any orientation. High quality is ensured through an ISO rated manufacturing facility. Independent laboratories confirm these products are consistently made to exacting standards. The red color band denotes the 1.3% MC% formula. When using a flip top safety/activator, this stream will travel 10-12 feet. This minimizes cross contamination and assists in targeting one person. This type of application will target the skin and eyes. The MK-4 canister size will deliver about 20-25 short bursts.