1.1This test method describes the measurement of the number of binding sites per unit length or width of machine-made, woven, knitted, and tufted pile yarn floor covering both before and after adhesive backing application.

1.2The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3Determination of the number of binding sites per unit length or width of pile floor covering previously was contained within Test Methods D418.

Note 1-For user convenience, Subcommittee D13.21 has subdivided Test Method D418 into separate standards, of which this test method is one.

1.4This standard does not purport to address all of 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.