Foam extinguishers have a smothering affect, depriving fire of oxygen. These type of fire extinguishers are especially effective on Class B (flamable liquid) fires, it can also be used on Class A (carbonaceous) fires, paper and wood.
Dry Powder extinguishers are usually rated for multiple purpose use. They contain an extinguishing agent and use a compressed, non-flammable gas as a propellant.
Water These extinguishers contain water and compressed gas and should only be used on Class A (ordinary combustibles) fires.
Carbon Dioxide (CO2) extinguishers are most effective on Class B and C (liquids and electrical) fires. Since the gas disperses quickly, these extinguishers are only effective from 3 to 8 feet. The carbon dioxide is stored as a compressed liquid in the extinguisher; as it expands, it cools the surrounding air. The cooling will often cause ice to form around the “horn” where the gas is expelled from the extinguisher. Since the fire could re-ignite, continue to apply the agent even after
the fire appears to be out.
Fire blankets
Fire blankets are made of fire resistant materials. They are particularly useful for smothering fat pan fires or for wrapping round a person whose clothing is on fire. However when purchasing fire blankets make sure they conform to the and are suitable for use in the home.
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