Standard Test Methods for Chemical Analysis of Zinc Dust (Metallic Zinc Powder)1
This trendy is issued below the ﬁxed designation d 521; the quantity straight away following the designation shows the yr of original adoption or, in the case of revision, the 12 months of last revision. Quite a number in parentheses indicates the 12 months of ultimate reapproval. A superscript epsilon (e) suggests a piece of writing alternate for the reason that final revision or reapproval.
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