What’s a Redline?
Redlines are PDF documents that provide a quick and easy way to compare all of the changes between an active ASTM standard and its previous version. With a redline you'll immediately see:
• additions
• deletions
• and other changes between the two standards.
How to Find a Redline
Redlines can be found at the Document Summary Page of an Active Standard. If the option to purchase a Redline does not appear, no Redline version is available. Approximately 600 Redlines are currently available and as new revisions are recorded, this number will increase monthly.
How to Read a Redline
A vertical bar will appear in the left margin wherever a change has been made to a standard. The bar can be large or small, depending upon the length of the change.
• Additions will be noted with underlining.
• Deletions will be noted with a strikethrough.
• Changes in charts and equations will be indicated with strikethroughs and the entire line containing the new information will appear below the original line. For example if one number in a line of a chart is changed, all the numbers in the line will appear with a strikethrough and immediately below that line, the new line of numbers will appear. In the case of an equation, the entire equation will appear with a strikethrough and an entire new equation will appear below the original equation.
To view a redline and see the benefits, click here.
Pricing and Availability
Redlines can only be purchased along with an Active Standard. From the Document Summary page select the "Active + Redline" option and you’ll get both the Active standard and the Redline version. Prices for Active + Redline standards are listed on the Document Summary page. Currently there are 600 Redlines available and as new revisions are recorded, this number will increase monthly.
Historical, Withdrawn Standards and Work Items
Also now available for purchase are:
• previous versions of a standard (historicals) and
• standards that have been withdrawn.
Descriptions of work items underway within ASTM’s committees are also available to view.
What’s a Historical Standard?
A Historical standard is a version of an ASTM standard that has been superseded by a more current version. Historical standards are available from ASTM in PDF only and are available for informational purposes. For example, an ASTM standard may have a designation and year date of F645-95. If this standard has been superseded by a new version (i.e. F645-99), the previous version, F645-95, is considered historical.
What’s a Withdrawn Standard?
A Withdrawn standard is an ASTM standard that has been discontinued by the ASTM Sponsoring Committee responsible for the standard. A standard may be withdrawn with or without replacement. ASTM makes withdrawn standards available for informational purposes.
Price: Prices for the Historical and Withdrawn standards are listed on the Document Summary page.
What’s a Work Item?
A Work Item (WK) may be a new standard or a revision to an existing standard that is under development by a committee.
ASTM publishes Work Item descriptions in the interest of openness, as well as to solicit input from interested stakeholders who may not be members of the committee. New standard Work Item descriptions include title, scope and keywords. Revision Work Items descriptions include designation, title and rationale.
Work Items are not available for purchase at this time.
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