1.1 This test method provides a means of determining the book bulk and bulking number of printing paper under a specified pressure.

1.2 For thickness of single sheets or small packs of sheets, see Test Method D645.

1.3 This standard does not purport to address all of the safety problems 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.