ASTM D685-12
(Practice)Standard Practice for Conditioning Paper and Paper Products for Testing
Standard Practice for Conditioning Paper and Paper Products for Testing
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.
SCOPE
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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D685 − 12 An American National Standard
Technical Association of Pulp and
Paper Industry Standard Method T 402
Standard Practice for
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Conditioning Paper and Paper Products for Testing
This standard is issued under the fixed designation D685; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope atmosphere and conditioning of samples
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2.3 TAPPI Standard:
1.1 This practice defines the standard atmospheres for
TAPPI T402 sp-03 Standard Conditioning and Testing At-
normal preconditioning, conditioning, and testing of paper and
mosphere for Paper, Board, Pulp Handsheets and Related
paper products, paperboard, fiberboard, and containers made
Products
from them. It also specifies procedures for handling these
materials in order that they may reach equilibrium with the
3. Significance and Use
respective atmosphere.
3.1 The preconditioning requirement is important because
1.2 This practice does not include special conditioning and
physical properties of a sample at 50 % relative humidity
testing atmospheres, such as those that attempt to simulate
depend upon whether the sample is brought to 50 % from a
tropical or arctic environments.
higher or lower relative humidity. A detailed discussion of the
1.3 This standard does not purport to address all of the
importance of preconditioning may be found in Annex A1.
safety concerns, if any, associated with its use. It is the
3.2 The conditioning and testing atmospheres are important
responsibility of the user of this standard to establish appro-
because both temperature and relative humidity have signifi-
priate safety and health practices and determine the applica-
cant effects on the physical properties of paper and board. A
bility of regulatory limitations prior to use.
more detailed discussion of the importance may be found in
2. Referenced Documents Annex A2.
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2.1 ASTM Standards:
4. Standard Atmospheres
D585 Practice for Sampling and Accepting a Single Lot of
4.1 Preconditioning Atmosphere—10 to 35 % relative hu-
Paper, Paperboard, Fiberboard, and Related Product
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midity and 22 to 40°C (see Annex A1 and Annex A2).
(Withdrawn 2010)
D4332 Practice for Conditioning Containers, Packages, or
4.2 Conditioning Atmosphere—50.0 6 2.0 % relative hu-
Packaging Components for Testing
midity and 23.0 6 1.0°C.
E171/E171M Practice for Conditioning and Testing Flexible
4.3 Testing Atmosphere—Same as 4.2.
Barrier Packaging
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NOTE 1—It is important to distinguish between the overall limits of the
2.2 ISO Standards:
temperatures within which conditioning and testing may be carried out
ISO 187 Paper, board and pulps -- Standard atmosphere for
and the limits within which the temperature must be maintained in order
conditioning and testing and procedure for monitoring the
to maintain the specified relative humidity limits; that is, the close
temperature tolerance of 61°C required in 4.2 and 4.3 will not in itself
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This practice is under the jurisdiction ofASTM Committee D10 on Packaging ensure the close relative humidity requirement of 62 % relative humidity,
andisthedirectresponsibilityofSubcommitteeD10.21onShippingContainersand as a sudden change of 1°C when at 23°C and 50 % relative humidity will
Systems - Application of Performance Test Methods.
change the relative humidity about 5 to 6 %.
Current edition approved Nov. 1, 2012. Published December 2012. Originally
approved in 1942. Last previous edition approved in 2007 as D685-93(2007), which
5. Apparatus
was withdrawn May 2010 and reinstated in November 2012. DOI: 10.1520/D0685-
12. 5.1 Preconditioning Chamber—Aroom or cabinet in which
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
sample sheets or specimens may be individually exposed to
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
circulating air at the preconditioning relative humidity and
Standards volume information, refer to the standard’s Document Summary page on
temperature.
the ASTM website.
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The last approved version of this historical standard is referenced on
www.astm.org.
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Available from American National Standards Institute (ANSI), 25 W. 43rd St., Available from TechnicalAssociation of the Pulp and Paper Industry (TAPPI),
4th Floor, New York, NY 10036, http://www.ansi.org. 15 Technology Parkway South, Norcross, GA 30092, http://www.tappi.org.
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