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Participants will test according to the manufacturer's instructions and in accordance with TAPPI T575. Stylus roughness measurements are reported in micro-deviations. Although the measurement is typically conducted in the cross-machine direction, samples for this analysis are cut with the machine direction long to reduce variability.

Sample Description: One packet of randomized, pre-conditioned linerboard, with five 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.