This is a 2023 test that is part of the CTS Late Order Purchase (LOP) plan. Credit card purchase only. Participants analyze evidence items contained within nylon bags for the presence/classification of ignitable liquid residue. A substrate comparison blank is provided. Samples ship in August.

This is a 2023 test that is part of the CTS Late Order Purchase (LOP) plan. Credit card purchase only. Participants perform a comparative analysis of architectural or automotive paint samples. Samples ship in September.

Participants compare/identify samples consisting of synthetic and/or processed natural fibers. Samples ship in January.

Participants perform a comparative analysis of architectural or automotive paint samples. Samples ship in February.

This test covers typical analyses performed on a variety of types of tape, including possible physical end matching. Samples ship in April.

Participants perform a comparative analysis of varying types of glass evidence including domestic and automotive. Samples ship in June.