What is a Class A Foam? A product that relies primarily on the water it contains for firefighting. These products contain foaming agents which create air bubbles when aerated and wetting …

Apr 1, 2010 · As a carbon-loving solution, Class A foam soaks into solid, combustible materials by breaking down the surface tension of the water. It helps the water penetrate the burning …

Jul 8, 2024 · Discover the different classes of firefighting foam and their applications. Learn how firefighting foam works and its effectiveness in combating fires.

Only Class A foams are used on wildland fires. Class A foam suppressants depend on the water they contain to suppress the fire. Refer to the Class A Foam Fact Sheet for an in depth …

Feb 2, 2022 · Class "A" foam will increase wetting effectiveness, which allows for greater penetration into Class "A" fuels. It also gives water a foaming ability, which allows water to …

Jul 1, 1992 · Class A foam can be best described as a “water enhancer.” It is a chemical additive that enhances and changes the capabilities of water. The addition of Class A foam to water, in …

Apr 1, 2019 · There are many different types of foam for firefighting: Class A foam is used for combustibles, structural fires and wildfires; Class B foam is used for ignitable liquids, like …

Jan 23, 2025 · Class A foam is specially formulated to make water more effective for firefighting. The surfactants in Class A foam significantly reduce water’s surface tension, which penetrates …

Its purposes are to provide: Basic understanding of how class A foams work and how they can be used. Knowledge for firefighters of the concepts pres-ently being used in foam application …

Low ex-pansion foam has proven to be an effective means of controlling, extinguishing, and securing most flammable liquid (Class B) fires. Foam has also been used successfully on …