What is the purpose of a fire extinguisher that uses deionized water?

The purpose of a fire extinguisher that uses deionized water primarily revolves around enhancing cooling characteristics while ensuring safety on electrical fires. Deionized water is free from minerals and impurities, which makes it safe to use around electrical equipment. The lack of conductivity means that it minimizes the risk of electric shock during use, making it suitable for extinguishing fires that may have involved electrical sources.

Additionally, water is effective in cooling down materials and reducing the heat that fuels the fire, helping to prevent re-ignition. This characteristic is essential in a firefighting scenario, as simply spraying water may not be enough if it can lead to electrical hazards.

In contrast, options that refer to extinguishing chemical fires or being limited to Class B fires do not accurately represent the capabilities and safety measures associated with deionized water extinguishers. While solid streams can help with coverage, that is a secondary feature and does not encapsulate the primary purpose and benefits of using deionized water in firefighting situations.