Standard Test Method for
pH of Wet Blue:
This standard is issued under the fixed designation D 6657; 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 indicates an editorial change since the last revision or reapproval.Click Here To ASTM: D 6657 – 01 PDF Free Download
https://mega.nz/#!muhm0YBT!h6ehtNmtnQQBqV1fLS9yQRuHurDI3xh-YEsk45oT2F0
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