Identification should include
- definition of foam—an aggregate of gas-filled bubbles formed from aqueous solutions of specially formulated, concentrated liquid-foaming agents
- types of foam available, including
- protein foam
- fluoroprotein foam–aqueous film-forming foam (AFFF)
- fluoroprotein film-forming foam (FFFP)
- detergent-type foams.
Process/Skill Questions:
- What are the differences between low-, medium-, and high-expansion foams?
- What foam is specifically used on polar solvents?
- Why is aeration critical during a foam operation?