Which statement describes the water content range of firefighting foam solution?

Which statement describes the water content range of firefighting foam solution?

• A. 80 to 85.5
• B. 90 to 98.6
• C. 94 to 99.9
• D. 80 to 90.7

Answer: (C)

Foam solution is created by mixing foam concentrate with water, and the resulting mixture is predominantly water. The water portion drives cooling and helps the foam blanket spread on the fire, while the concentrate provides the surfactants and film-forming agents. Because of this high water content, the foam solution is typically about 94 to 99.9 percent water. The other ranges would imply a much smaller amount of water and wouldn’t reflect how foam solution acts in firefighting. So, 94 to 99.9 percent water best describes the water content range.

Foam solution is created by mixing foam concentrate with water, and the resulting mixture is predominantly water. The water portion drives cooling and helps the foam blanket spread on the fire, while the concentrate provides the surfactants and film-forming agents. Because of this high water content, the foam solution is typically about 94 to 99.9 percent water. The other ranges would imply a much smaller amount of water and wouldn’t reflect how foam solution acts in firefighting. So, 94 to 99.9 percent water best describes the water content range.