LOP Enrollment Deadline: 1 February 2026

This test is still open for enrollment via credit card only. Please select credit card as the payment method during the checkout process if your order includes any Late Order Purchase (LOP) tests.

Participants will analyze and compare adhesive tape evidence, using chemical and physical examinations (including optional physical end matching) to determine if questioned items could have originated from their respective known items.

Sample Description: Three pairs of pressure-sensitive tape samples, each containing one known sample and one questioned sample.

Samples ship in May.

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