Aqueous Film-forming Foam concentrate (AFF)

Aqueous film-forming foam concentrate (AFF) is a foam concentrate based on a mixture of hydrocarbon and fluorinated surface active agents.

Source: IMO MSC.1/Circ.1312, Revised Guidelines for the performance and testing criteria, and surveys of foam concentrates for fixed fire-extinguishing systems, 10 June 2009, International Maritime Organization. Regulatory Guidance 

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