AS ISO 14520.9:2009 Physical characteristics and system design of gas fire extinguishing systems HFC 227ea fire extinguishing agent (ISO 14520-9: 2006, MOD)
1970AS ISO 14520.9:2009 Physical characteristics and system design of gas fire extinguishing systems HFC 227ea fire extinguishing agent (ISO 14520-9: 2006, MOD)