1. SCOPE 1.1 These requirements cover chemical, physical and performance properties of dry
chemical fire extinguishing agents for use in portable fire extinguishing equipment being
evaluated to CAN/ULC-S504, Standard for Dry Chemical Fire Extinguishers. 1.2 These requirements are also intended for the evaluation of recharge dry
chemical fire extinguishing agents for use in extinguishers meeting the requirements of
CAN/ULC-S504, provided the performance of the combination of the extinguisher and recharge
agent, including performance during fire tests, can be shown to be equivalent to that of the
original extinguisher. NOTE: Reference to each applicable Test Method for a requirement is indicated by the letters TM and
the appropriate Clause or Section number in parentheses in the right hand margin.