Enrollment Deadline: 15 February 2026

Participants test samples using ASTM D792, ASTM D1505, or ISO 1183.

Sample Description: Two sets of four injection-molded bars. CTS may send ASTM Flex Bars or Tensile Type 1 bars, since both can be cut to size for individual laboratory needs. CTS chooses different polymers for each cycle of testing.

Samples ship in April, July, and October for a total of three shipments.

Additional Information: Laboratories using ISO 1183 must convert from density to specific gravity before reporting data.

This test is included on CTS' Scope of Accreditation to ISO/IEC 17043.