Which Class B foam type is film-forming and fluoroprotein-based?

Which Class B foam type is film-forming and fluoroprotein-based?

• A. Protein foam
• B. Fluoroprotein foam
• C. Film forming fluoroprotein foam (FFFP)
• D. Aqueous Film Forming Foam (AFFF)

Answer: (C)

The key idea is combining a film-forming capability with a fluoroprotein base. This type uses a protein foam foundation blended with fluorinated surfactants, which lowers surface tension and creates a stable, spreading film on hydrocarbon fuels. That film blankets the surface quickly, helps separate the fuel from the air, and improves knockdown and recovery resistance—precisely what you want for Class B fires. Among the options, this specific combination is described as film forming fluoroprotein foam. Other foams may be film-forming or fluoroprotein-based, but not both together in this particular formulation, so they don’t fit as well.

The key idea is combining a film-forming capability with a fluoroprotein base. This type uses a protein foam foundation blended with fluorinated surfactants, which lowers surface tension and creates a stable, spreading film on hydrocarbon fuels. That film blankets the surface quickly, helps separate the fuel from the air, and improves knockdown and recovery resistance—precisely what you want for Class B fires. Among the options, this specific combination is described as film forming fluoroprotein foam. Other foams may be film-forming or fluoroprotein-based, but not both together in this particular formulation, so they don’t fit as well.