This International Standard specifies the performance requirements for the limited flame spread properties of materials and material assemblies used in protective clothing in order to reduce the possibility of the clothing burning and thereby itself constituting a hazard.
Protective clothing complying with this International Standard is intended to protect workers against occasional and brief contact with small igniting flames, in circumstances where there is no significant heat hazard and without presence of another type of heat. Limited flame spread materials and material assemblies are also used in clothing for protection against heat hazards, when additional test methods and performance standards must be applied and ISO 11612 is more appropriate.
Protective clothing of lower level of protection (Index 1) may not be used next to the skin.
A classification system is given for materials, material assemblies and garments tested according to ISO 15025 Procedure A: Protective clothing Protection against heat and flame- Method of test for limited flame spread (surface ignition), after a standard cleaning procedure.