A. Studies conducted by Factory Mutual (in 1975) demonstrated that the blend of Halon 1211 and 1301 is much more effective than either 1211 or 1301 alone. The optimum blend of 1211 and 1301 possesses up to 50% more fire kill capability, than 1211 alone.
B. Less leakage. 1211-1301 Blended fire extinguishers maintain their pressure when used. Since the Halon molecule is larger than the nitrogen molecule, the blended units experiences less leakage around the valve and “O” rings.
C. Halon 1211-1301 fire extinguishers are exempt from the six year teardown maintenance and 12 year hydrostatic test which represents huge savings.