Until a paint-roller cover is saturated with paint, only part of the paint loaded onto the paint-roller cover can be transferred to a surface being painted. The remainder of the paint is absorbed into the fabric of the paint-roller cover. The amount of paint absorbed by a paint-roller cover is inversely proportional to the amount already present within the paint-roller cover. By saturating the paint-roller cover before testing, quantitative inaccuracies of the amount of paint delivered to a surface are eliminated.

4.1.1 Using a saturated paint-roller cover enables the user to apply paint at controllable spreading rates.

4.1.2 Using a saturated paint-roller cover affords reproducibility, when repeating a test.

1.1 This practice describes the preparation or breaking-in of paint-roller covers for evaluation.

1.2 This practice is applicable to paint-roller covers having nap lengths up to 1/2 in. (13 mm).

1.3 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.