Standard Specification for
Natural Rubber (NR) Technical Grades1
This standard is issued under the fixed designation D 2227; 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 to download Astm D 2227 – 96 (Reapproved 2002) Pdf free
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Click here to Astm D 2226 – 93 (Reapproved 2002) Pdf free download