Halon 1211 and 1301 or “Halon Blend” are liquefied compressed gasses which stop the spread of fire by chemically interrupting combustion as previously explained. Halons are odorless, colorless, electrically nonconductive, leave no residue after use and are “people safe.”
The Halon blend is far superior to the 1211 Halon propelled by nitrogen because it generates its own pressure so that it does not change even if the extinguisher is almost empty. It is also more effective than straight halon 1211 in extinguishing fires.