1.1This performance specification establishes the minimum design and performance requirements for protective clothing and protective clothing materials for both primary and secondary protection from exposure to molten substances and related thermal hazards.

1.2This performance specification is not intended to address protection from hot liquids or from specialized forms of heat and flame protection such as any fire fighting application.

1.3This performance specification describes the properties of specific textile materials in their material or garment composite form as tested by laboratory methods and is not intended to be used to appraise the thermal hazard or risk under actual conditions. However, it is acceptable to use information on the thermal performance of clothing made from textile materials conforming to this specification as an element in thermal risk assessment which takes into account all factors pertinent to the thermal hazard of a particular end use.

1.4The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

1.5This performance specification does not purport to address all of the safety concerns, if any, associated with the use of compliant protective clothing or protective clothing materials. It is the responsibility of the persons or organizations that use this performance specification to conduct a hazard and risk assessment to determine the applicability of this performance specification to the intended application of the protective clothing or protective clothing materials, and to establish appropriate safety and health practices.