Which type of foam is especially effective on hydrocarbon fuels and polar solvents?

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Multiple Choice

Which type of foam is especially effective on hydrocarbon fuels and polar solvents?

Foam choices are tied to the type of fuel you’re fighting. Class B foams are formulated specifically to handle liquids like hydrocarbon fuels and polar solvents. They work by forming a stable, surface-covering layer that blankets the liquid, which cools it and reduces the release of flammable vapors. That vapor suppression and surface blanket are what make Class B foams especially effective on hydrocarbon fuels such as gasoline and diesel, as well as polar solvents like acetone and alcohols. In contrast, foams aimed at solid fuels (Class A), electrical fires (Class C), or metal fires (Class D) aren’t designed to control hydrocarbon liquids and polar solvents as effectively. That’s why Class B is the best choice for those liquid fuels.

Foam choices are tied to the type of fuel you’re fighting. Class B foams are formulated specifically to handle liquids like hydrocarbon fuels and polar solvents. They work by forming a stable, surface-covering layer that blankets the liquid, which cools it and reduces the release of flammable vapors. That vapor suppression and surface blanket are what make Class B foams especially effective on hydrocarbon fuels such as gasoline and diesel, as well as polar solvents like acetone and alcohols.

In contrast, foams aimed at solid fuels (Class A), electrical fires (Class C), or metal fires (Class D) aren’t designed to control hydrocarbon liquids and polar solvents as effectively. That’s why Class B is the best choice for those liquid fuels.

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