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The purpose of a fire extinguisher is to extinguish small fires and prevent them from spreading. Fire extinguishers are designed as safety equipment that individuals can use to tackle early-stage fires before they escalate into larger, more dangerous situations. They contain various extinguishing agents, such as water, foam, dry chemical, or CO2, which are effective in putting out different types of fires based on their classifications (e.g., Class A for ordinary combustibles, Class B for flammable liquids, etc.).

Successful use of a fire extinguisher can help control a fire's growth, potentially saving lives and minimizing damage to property. It's crucial for users to understand how to identify the correct type of extinguisher for the specific fire they are facing, as using the wrong type can be ineffective or even dangerous. Having fire extinguishers accessible in various locations can provide an immediate response to fires, thus playing a critical role in fire safety protocols within buildings and facilities.