Which fire extinguisher is appropriate for flammable liquids?

The appropriate choice for extinguishing fires involving flammable liquids is CO2 and Purple K powder. This option is effective because carbon dioxide is a clean, non-conductive agent that displaces oxygen around the fire, effectively suffocating it without leaving a residue behind. Purple K powder is also a highly effective dry chemical agent specifically designed for extinguishing flammable liquids and gas fires. It works by interrupting the chemical reactions occurring during the fire.

Water, while effective for certain types of fires, can spread flammable liquids and is not suitable for extinguishing those fires due to the risk of worsening the situation. AFFF, or Aqueous Film Forming Foam, is effective as well, particularly in creating a barrier that prevents re-ignition. However, the specific combination of CO2 and Purple K is generally preferred in a wide range of flammable liquid scenarios due to their effectiveness and versatility. Dry powder extinguishers can also be suitable, but the combination mentioned provides excellent coverage and effectiveness for high-risk situations involving flammable liquids, making it the best choice in this context.