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 …

Class A foams were developed in the mid-1980s for fighting wildfires. Class A foams lower the surface tension of the water, which assists in the wetting and saturation of Class A foams with …

Environmentally responsible KnockDown®, a Class A foam concentrate, is a unique formulation providing unmatched firefighting performance and flexibility. Qualified to USDA Forest Service …

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 …

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 …

This publication covers the basics of using class A foams and discusses their adaptability to present application equipment. Its purposes are to provide: Basic understanding of how class …

Class A foams may be used as a firefighting agent or as a fire barrier. When used as a wetting agent, the concentrate lowers the surface tension of the water, allowing better penetration into …

What is Class A Foam? Class A foam is a liquid foam solution used to extinguish fires in ordinary combustible solids such as wood, fabric, paper or organic material. Class A foam is made by …