ASTM E171-94(2002)
(Specification)Standard Specification for Standard Atmospheres for Conditioning and Testing Flexible Barrier Materials
Standard Specification for Standard Atmospheres for Conditioning and Testing Flexible Barrier Materials
SCOPE
1.1 This specification defines the standard temperature and humidity for conditioning and testing of materials at nominally ambient conditions.
1.2 There are many other temperature and humidity conditions which may be appropriately used to test end use conditions such as freezer, refrigerated or abusive storage. These need to be individually established.
1.3 Temperature and humidity alone are not sufficient to completely define a storage condition. Many other factors may be relevant (such as time, light and atmospheric pressure) which are defined in this specification.
1.4 Only those materials which fall into the general area of flexible packaging materials are included. Many other materials which were included in earlier versions of this specification may also need a definition.
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Designation: E 171 – 94 (Reapproved 2002)
Standard Specification for
Standard Atmospheres for Conditioning and Testing
Flexible Barrier Materials
This standard is issued under the fixed designation E 171; 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 (e) 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 paper, board, pulp handsheets, and related products
1.1 This specification defines the standard temperature and
3. Standard Atmospheres
humidity for conditioning and testing of materials at nominally
3.1 Condition and test materials containing paper as fol-
ambient conditions.
lows:
1.2 There are many other temperature and humidity condi-
Temperature: 23 6 1°C (73.4 6 1.8°F)
tions which may be appropriately used to test end use condi-
Humidity: 5062%RH
tions such as freezer, refrigerated or abusive storage. These
3.2 Condition and test plastic materials as follows:
need to be individually established.
1.3 Temperature and humidity alone are not sufficient to Temperature: 23 6 2°C (73.4 6 3.6°F)
Humidity: 5065%RH
completely define a storage condition. Many other factors may
be relevant (such as time, light and atmospheric pressure)
3.3 Conditioning and testing of other materials is not within
which are not defined in this specification.
the scope of this specification.
1.4 Only those materials which fall into the general area of
3.4 The instruments and techniques used to measure these
flexible packaging materials are included. Many other materi-
standard conditions of temperature and humidity must be
als which were included in earlier versions of this specification
validated. The validation process is beyond the scope of this
may also need a definition.
specification.
3.5 Preconditioning may be important with some items,
...
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