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ASTM D685-17

Historical Revision

Standard Practice for Conditioning Paper and Paper Products for Testing

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1.1 This practice defines the standard atmospheres for normal preconditioning, conditioning, and testing of paper and paper products, paperboard, fiberboard, and containers made from them. It also specifies procedures for handling these materials in order that they may reach equilibrium with the respective atmosphere.

1.2 This practice does not include special conditioning and testing atmospheres, such as those that attempt to simulate tropical or arctic environments.

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.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


3.1 The preconditioning requirement is important because physical properties of a sample at 50 % relative humidity depend upon whether the sample is brought to 50 % from a higher or lower relative humidity. A detailed discussion of the importance of preconditioning may be found in Annex A1.

3.2 The conditioning and testing atmospheres are important because both temperature and relative humidity have significant effects on the physical properties of paper and board. A more detailed discussion of the importance may be found in Annex A2.

3.3 This standard is technically identical to TAPPI T-402.

SDO ASTM: ASTM International
Document Number D685
Publication Date April 1, 2017
Language en - English
Page Count 4
Revision Level 17
Supercedes
Committee D10.21
Publish Date Document Id Type View
April 15, 2022 D0685-22 Revision
April 1, 2017 D0685-17 Revision
Nov. 1, 2012 D0685-12 Revision
Dec. 1, 2007 D0685-93R07 Revision
Feb. 10, 1998 D0685-93R98 Reaffirmation
Sept. 15, 1993 D0685-93R02 Reaffirmation