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ASTM Guide covers polymer pellet terminology.

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December 9, 2011 - Developed by ASTM International Committee D20 on Plastics, ASTM D7711 includes terms that are commonly used to describe defects or abnormalities found in different types of polymer pellets. According to Diane Todd, senior chemist at Westlake Chemical Corp., guide should help polymer manufacturers, sales personnel, technical service reps, quality control/quality assurance personnel, and buyers/users identify issues with pellets the same way, expediting assistance.

New ASTM Guide Provides Terminology for Suppliers and Users of Polymer Pellets

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ASTM International
100 Barr Harbor Dr., Box C700
West Conshohocken, PA, 19428-2959

Press release date: December 6, 2011

W. CONSHOHOCKEN, Pa., -Terms that are commonly used to describe defects or abnormalities found in different types of polymer pellets have now been collected in a standard developed by ASTM International Committee D20 on Plastics.

ASTM D7711, Guide for Description of Polymer Pellet Defects, is under the jurisdiction of Subcommittee D20.92 on Terminology.

According to Diane Todd, senior chemist, quality control laboratories, Westlake Chemical Corp., a survey of D20 members conducted prior to the development of ASTM D7711 revealed that many potential users of the standard did not have a written procedure for identifying pellet abnormalities. Members surveyed were asked to list terms used by their organizations, and these terms formed the initial list used to develop ASTM D7711.

"Anyone who is in contact regarding polymeric pellets will now be able to communicate with the same terminology to anyone else," says Todd, the chairman of D20.92, as well as the chair of the task group that developed ASTM D7711. "This will hopefully help polymer manufacturers, sales personnel, technical service representatives, quality control/quality assurance personnel and buyers/users identify issues with the pellets the same way, thereby expediting assistance with the issues."

To purchase ASTM standards, visit and search by the standard designation number, or contact ASTM Customer Relations (phone: 610-832-9585; ASTM International welcomes and encourages participation in the development of its standards. For more information on becoming an ASTM member, visit

ASTM International is one of the largest international standards development and delivery systems in the world. ASTM International meets the World Trade Organization (WTO) principles for the development of international standards: coherence, consensus, development dimension, effectiveness, impartiality, openness, relevance and transparency. ASTM standards are accepted and used in research and development, product testing, quality systems and commercial transactions.

View this release on the ASTM Web site at

ASTM Committee D20 Next Meeting: April 15-18, 2012, April Committee Week, Phoenix, Ariz.

Technical Contact: Diane Todd, Westlake Chemical Corp., Longview, Texas, Phone: 903-242-7968;

ASTM Staff Contact: Alyson Fick, Phone: 610-832-9710;

ASTM PR Contact: Barbara Schindler, Phone: 610-832-9603;
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