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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 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.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D585 Practice for Sampling and Accepting a Single Lot of Paper, Paperboard, Fiberboard, and Related Product
D4332 Practice for Conditioning Containers, Packages, or Packaging Components for Testing
E171/E171M Practice for Conditioning and Testing Flexible Barrier Packaging
ISO StandardsISO187 Paper, board and pulps -- Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples
TAPPI StandardTAPPIT402sp-03 Standard Conditioning and Testing Atmosphere for Paper, Board, Pulp Handsheets and Related Products
ICS Number Code 85.060 (Paper and board)
UNSPSC Code 14110000(Paper products)
ASTM D685-12, Standard Practice for Conditioning Paper and Paper Products for Testing, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top