ASTM D644-99(2002) (R1999)

1.1 This test method covers the determination of the moisture in all papers, paperboards, and paperboard and fiberboard containers, except those containing matter other than water that is volatile at 105°C.

1.2 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.

Note1—This test method is technically equivalent to TAPPI T 412 - 83.

3.1 The moisture content of paper and paperboard may affect the purchase cost and can also have an effect upon the performance of the paper in a given application since moisture content can affect properties including, but not limited to tensile strength, tearing resistance, dimensional instability, permanence, printability, flexibility, and runability on various types of paper processing machinery and equipment. Knowledge of moisture content is necessary to calculate, to a dry basis, analytical results obtained from test specimens weighed at ambient or conditioned moisture content.