How frequently must the agent in a stored pressure wetting agent fire extinguisher be replaced?

The agent in a stored pressure wetting agent fire extinguisher must be replaced annually to ensure its effectiveness in an emergency situation. This frequency is critical because the chemical compounds within the extinguisher can degrade over time, which may compromise their ability to suppress fires effectively. Regular replacement ensures that the extinguisher maintains its pressure and that the agent remains in optimal condition to combat fires.

This annual requirement aligns with safety standards and best practices for fire safety equipment, underscoring the importance of maintaining fire extinguishers in a ready-to-use state. Regular servicing and replacement of the extinguishing agent not only enhances safety but also ensures compliance with regulatory requirements that dictate proper maintenance schedules for fire safety equipment.