Enrollment Deadline: 15 November 2025

Participants will test samples using ASTM D5630.

Sample Description: Two sealed moisture barrier bags, each containing 15 g of glass-filled polymer, which may come from the same batch or different batches. Enough material is supplied for labs to complete at least two measurements, and any additional material may be used for procedure setup and additional testing.

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

Additional Information: Laboratories should assume that all samples will exceed 10% ash content.

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