ASTM Distillation refers to a diverse group of different ASTM International standards. These different ASTM standards all use the distillation (volatility) characteristics of the substrate in determining the adherence (or not) of the substrate to the standard.
Some examples of ASTM International standards utilizing distillation are:
ASTM Distillation is a subset of the standards set by the standards organization ASTM International, a voluntary standards development organizations that sets technical standards for materials, products, systems, and services.
References
ASTM distillation Wikipedia(Text) CC BY-SA