What type of fire extinguisher should be readily available in a solvent-based refinishing area and why?

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Fires involving solvents and paints are fires of flammable liquids, so the extinguisher chosen must be rated for those fuels. A Class B extinguisher is designed to fight flammable liquid fires by smothering the flame and removing heat or fuel, depending on the agent. In a solvent-based refinishing area, this is the primary hazard, so having a Class B extinguisher readily available provides the most effective protection. If electrical equipment is present, having access to an extinguisher that also handles electrical fires (Class C) is wise, but the main need is a device rated for flammable liquids. The other options don’t fit as well because ordinary combustibles target wood or paper and aren’t the main risk here, and metals require specialized extinguishing agents. An extinguisher focused on flammable liquids offers the strongest protection for this environment.