You’re on-board with the technology. You’ve seen the powerful knockdown capabilities of foam and realize it’s a valuable fire suppression tool. You know your department can benefit from installing a system, but how do you go about determining the proper use of Class A and Class B foam?

Like any technology that’s new to your department, you start with education. By increasing your knowledge about the two different types of foam, you’ll be confident in knowing when, where and how to use Class A and Class B foam to achieve fast, safe suppression for any type of fire situation.

It’s obvious that Class A foam is used to fight Class A fires, and that Class B foam snuffs out the Bs. What may not be obvious, however, is how their chemical composition enables Class A and Class B foams to be more suitable for one fire situation over another.
The basic difference is how the foams react to carbon: Class A attracts it; Class B repels it…. [read full article here]