Foam concentrate is defined as:

Foam concentrate is indeed best defined as the raw foam liquid in its storage container. This definition highlights the nature of foam concentrates, which are highly concentrated solutions that contain the necessary surfactants and other chemicals required to create foam when mixed with water.

When discussing foam operations, it's important to understand that foam concentrates must be mixed with a specific amount of water to produce the actual firefighting foam used on fires. This distinguishes the concentrate itself from the final foam mixture that results from combining the concentrate with water. By identifying foam concentrate as the raw form, it clarifies that this is the starting material that firefighters utilize to create the foam necessary for fire suppression in various scenarios.

In contrast, the final product used on fires refers to the foam that is applied to the fire, which results from mixing the concentrate with water. The mixture of foam and water is the foam solution, while the chemicals used to produce foam pertain more to the individual components within the concentrate rather than the concentrate as a whole. Thus, understanding the definition of foam concentrate as the raw foam liquid is crucial for successful fire suppression techniques.