Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration1
This trendy is issued beneath the fixed designation d 664; the number straight away following the designation indicates the year of original adoption or, inside the case of revision, the 12 months of remaining revision. More than a few in parentheses indicates the yr of final reapproval. A superscript epsilon (e) indicates an editorial trade because the final revision or reapproval.
This trendy has been accepted to be used by organizations of the department of protection.
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You can also get ASTM D 662 – 93 International standard