What is a "Clean Agent" in fire extinguishing terms?

A "Clean Agent" in fire extinguishing terms refers to a gaseous extinguishing agent that leaves no residue after discharge. This is essential in environments where equipment, documents, or sensitive materials need to be protected from both fire and damage caused by traditional extinguishing agents, such as water or foam, which can create harmful messes. Clean agents effectively extinguish flames through methods such as displacing oxygen or interrupting the combustion process, and they evaporate quickly without leaving behind harmful residues, making them ideal for use in data centers, museums, laboratories, and similar settings.

The other choices refer to concepts that do not fully capture the definition of clean agents. While some solutions may chemically neutralize fire or be considered environmentally friendly, they may not exhibit the key characteristic of leaving no residue. Additionally, while there are agents used for electrical fires, they do not necessarily fit the definition of clean agents as a broader category.