What is the key difference between AFFF and AR-AFFF?

What is the key difference between AFFF and AR-AFFF?

• A. AR-AFFF is designed for water-only uses.
• B. AR-AFFF is alcohol-resistant, designed for fuels containing alcohol; use AR-AFFF as specified by product data sheet.
• C. AR-AFFF contains no surfactants.
• D. AR-AFFF is the same as regular AFFF.

Answer: (B)

AR-AFFF differs from regular AFFF by being alcohol-resistant. This means it’s formulated to maintain its surface film and fire-smothering performance even when the fuel contains alcohol (like ethanol blends or other alcohol-bearing fuels). Regular AFFF can be degraded by alcohol in the fuel, reducing its effectiveness, so AR-AFFF is used for those situations and only as specified on its product data sheet. It’s not designed for water-only uses, and it’s a distinct formulation from regular AFFF with the specific purpose of resisting alcohol in fuels.

AR-AFFF differs from regular AFFF by being alcohol-resistant. This means it’s formulated to maintain its surface film and fire-smothering performance even when the fuel contains alcohol (like ethanol blends or other alcohol-bearing fuels). Regular AFFF can be degraded by alcohol in the fuel, reducing its effectiveness, so AR-AFFF is used for those situations and only as specified on its product data sheet. It’s not designed for water-only uses, and it’s a distinct formulation from regular AFFF with the specific purpose of resisting alcohol in fuels.