What is the initial knockdown percentage for Class A fires using Firebull A/B foam?

The initial knockdown percentage for Class A fires using Firebull A/B foam is 0.25%. This figure represents the effectiveness of the foam in extinguishing fires involving ordinary combustibles such as wood, paper, and cloth, which are classified as Class A fires.

Using foam on these types of fires provides a blanket of fire-suppressing material that smothers the flames and prevents oxygen from reaching the burning material. The specific percentage indicates the concentration needed for effective initial application, allowing firefighters to apply the correct amount of foam to achieve quick knockdown while minimizing waste and potential environmental impact. Understanding this percentage is crucial in practical firefighting scenarios, as it directly affects the tactics and strategies employed by firefighters during suppression efforts.