What is the average shelf life of Class A foam and Class B synthetic foam concentrates?

The average shelf life of Class A foam and Class B synthetic foam concentrates typically ranges from 20 to 25 years. This longevity is attributed to the chemical stability of these foams, which allows them to maintain their effectiveness over an extended period of time when stored properly. Factors such as temperature, sunlight exposure, and seals on containers can significantly impact the longevity of foam concentrates, but when maintained in optimal conditions, the 20 to 25 years shelf life is a well-acknowledged standard in the industry. Understanding this range is crucial for fire departments and rescue organizations, as using expired or degraded foam concentrates can compromise firefighting efforts and safety during emergency operations.