Which of the following is NOT a category of Class B foam?

Class B foam is specifically designed for use on flammable liquid fires, with different types of foam offering various properties that enhance firefighting effectiveness. The common categories of Class B foam include:

• Protein foam: Made from natural protein sources, this type of foam is effective in suppressing flammable liquids by forming a surface layer that prevents flammable vapors from escaping, thereby reducing fire spread.

• Fluoroprotein foam: This is a modified version of protein foam that includes fluorinated surfactants, giving it improved performance against polar solvents and enhanced burn-back resistance.

• Aqueous film-forming foam (AFFF): This foam creates a film that spreads over the surface of burning liquids, effectively smothering the fire and preventing vapor release.

Amine foam, however, is not classified as a type of Class B foam. While it might be used in other formulations or applications, it does not fall into the established categories recognized for fire suppression. Understanding the properties and classifications of different types of foams is essential for effective firefighting, particularly in hazardous environments involving flammable liquids.