1.1 This 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 covering both before and after adhesive backing application.

1.2 The values stated in SI units are to be regarded as the standard for all measurements. The inch-pound values are provided for information purposes only.

1.3 Determination of the number of binding sites per unit length or width of pile yarn floor covering previously was contained within Test Methods D 418. For user convenience Subcommittee D13.21 has subdivided Test Methods D 418 into separate standards, of which this test method is one.

This 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.