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Significance and Use
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 .
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 .
3.3 This standard is technically identical to TAPPI T-402.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ISO StandardsISO 187
TAPPI StandardTAPPI/ANSI T402 TAPPI T400 Sampling and Acceptance of a Single Lot of Paper, Paperboard, Containerboard or Related Product
ICS Number Code 85.060 (Paper and board)
UNSPSC Code 14110000(Paper products)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D685-17, Standard Practice for Conditioning Paper and Paper Products for Testing, ASTM International, West Conshohocken, PA, 2017, www.astm.orgBack to Top