Standard Practice for
Preparing Precision and Bias Statements for Test Methods
for Construction Materials1
This standard is issued under the fixed designation C 670; 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.
This standard has been approved for use by agencies of the Department of Defense.
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Cick here to download Astm C 668 – 98 (Reapproved 2003)E1 Pdf Free Download