Enrollment Deadline: 15 November 2025

Participants will test samples using ASTM D6869, ASTM 6980, ASTM D7191, or ISO 15512 (Method B), then report a maximum of three readings per sample. Less than three readings may be reported in accordance with a laboratory's standard procedures.

Sample Description: Two sealed moisture barrier bags, each containing 60 g of polymer, which may come from the same batch or different batches.

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

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