This is the common UL and ULC Standard for Water Based Agent Fire Extinguishers. It is the Second edition of CAN/ULC-S554, and the Sixth edition of ANSI/UL 8.
These requirements cover the construction and performance, exclusive of performance during fire tests, of portable water based agent fire extinguishers. These fire extinguishers are intended to be utilized in accordance with the Standard for Portable Fire Extinguishers, NFPA 10 and with the National Fire Code of Canada. The requirements for performance during fire testing of water based agent fire extinguishers are specified in the Binational Standard for Rating and Fire Testing of Fire Extinguishers, ANSI/UL 711 CAN/ULC-S508.