Labs will use ASTM E478 and ISO 4751 to determine percentages of elements in samples. Samples ship in November.

Labs will use the TAPPI Method T804 to determine top-to-bottom compression strength. Participation is limited to the United States (including Puerto Rico), Canada, & Mexico.

Labs will use either the TAPPI Method T811 (wax dip), TAPPI Method T839 (clamp), or both to determine edgewise compression strength. Samples ship second week of each month prior to the month during which testing is conducted.

Labs will use the TAPPI Method T807 to determine bursting strength. Samples ship second week of each month prior to the month during which testing is conducted.

Labs will use the TAPPI Method T822 to determine ring crush. Samples ship second week of each month prior to the month during which testing is conducted.

Labs will use the TAPPI Method T826 to determine short span compression (STFI). Samples ship second week of each month prior to the month during which testing is conducted.

Labs will use the TAPPI Method T575 to determine surface topography. Samples ship second week of each month prior to the month during which testing is conducted.

Labs will use the TAPPI Method T538 to determine surface roughness. Samples ship second week of each month prior to the month during which testing is conducted.

Labs will use the TAPPI Method T569 to determine internal bond strength. Samples ship second week of each month prior to the month during which testing is conducted.

Labs will use the TAPPI Method T815 to determine slide angle. Samples ship second week of each month prior to the month during which testing is conducted.