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

Formerly under the jurisdiction of Committee D06 on Paper and Paper Products, this test method was withdrawn in August 2010 because an equivalent TAPPI publication exists.

The measurement of book bulk by this test method is particularly useful to book manufacturers and printers for determining the probable thickness of a book consisting of a particular paper in a specified number of sheets or pages.

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 D 645/D 645M.

1.3 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.