Published: Jan 1984
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The history and development of the ASTM Committee E-37 Purity Method is discussed. The early protocols and resulting round robin data are considered. The importance of the development of suitable sample materials to be used by the task group members in parallel with the methods development is also discussed.
purity determination, mol percent impurity, differential scanning calorimetry, purity standard material, ASTM Method E 928-83
Research chemist, Center for Materials Science, National Bureau of Standards, Washington, DC