Providing worldwide interlaboratory testing since 1971


ASTM Test Methods

CTS offers a variety of plastics proficiency tests for ASTM test methods across four properties. Select any combination of tests (ASTM and/or ISO test methods) to build a custom interlaboratory program that meets your unique needs.


Copyright © CTS, Inc., 2018

Collaborative Testing Services, Inc.
P.O. Box 650820, Sterling, Virginia, USA 20165-0820
Phone: 1-571-434-1925