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.