Standard Practice for
Determining Resistance of Synthetic Polymeric Materials to
This standard is issued under the fixed designation G 21; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
click below Astm G 21 – 96 (Reapproved 2002) pdf free download