Enroll at any time.

Participants will test according to the manufacturer's instructions and in accordance with TAPPI T538. Measurements are performed on the top side of the samples, indicated by a notch in the top right corner.

Sample Description: One packet of randomized, pre-conditioned linerboard, with ten sheets per packet.

Samples ship monthly for a total of 12 shipments beginning with the earliest available cycle of testing.

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