Standard Practice for
Monitoring Atmospheric SO2 Using the Sulfation Plate
This popular is issued below the constant designation g ninety one; the range immediately following the designation shows the year of unique
adoption or, within the case of revision, the year of last revision. more than a few in parentheses shows the 12 months of last reapproval. a superscript
epsilon (e) suggests a piece of writing exchange since the final revision or reapproval.
click below to download Astm G 91 – 97 pdf free
click here to download Astm G 90 – 98 pdf free