Historical
ISO 9151:1995
Protective clothing against heat and flame - Determination of heat transmission on exposure to flame
Specifies a method for comparing the heat transmission through materials or material assemblies used in protective clothing. Materials are ranked by calculation of a heat transfer index, which is an indication of the relative heat transmission under the specified test conditions. The heat transfer index should not be taken as a measure of the protection time given by the tested materials under actual use conditions.
International Organization for Standardization [iso]