Standard Test Methods for Moisture in Textiles

SIGNIFICANCE AND USE
5.1 Test Methods D2654, Procedure 1, is used in the trade as a basis for rejecting abnormally wet material, but it is not recommended for routine acceptance testing of commercial shipment. Procedure 2 is used by the trade and is recommended for acceptance testing of commercial shipments except as stated in Note 1 . Procedure 3 is used to determine the moisture in a material in a given moisture-equilibrium situation and is not used for acceptance testing of commercial shipments. Procedure 4 is for research and development and is recommended for determining the standard moisture regain of a material although there will usually be a bias between buyer and producer data because the produce is usually able to obtain material without surface material, mostly finishes.  
5.1.1 In case of a dispute arising from differences in reported test results when using Test Method D2654 for acceptance testing of commercial shipments, the purchaser and the supplier shall conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties shall take a group of test specimens that are as homogeneous as possible and that are from a lot of material of the type in question. The test specimens shall then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories shall be compared using student's l-test for unpaired data and an acceptable probability level chosen by the two parties before the testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in the light of the known bias.  
5.2 The measurement of moisture is important for several reasons, including the following:  
5.2.1 Large quantities of fibers and manufactured textile products containing some water are bought and sold on the basis of...
SCOPE
1.1 These test methods cover measurement of moisture in textile materials as (1) moisture content or pick-up using ambient air for oven-drying, (2) moisture content or pick-up using standard atmosphere for testing textiles for oven-drying, (3) moisture content or pick-up at moisture equilibrium, and (4) moisture regain. These test methods are applicable to all fibers natural or man-made, and in all forms from fiber or filament to finished fabric, subject to the limitations set forth in 1.1.1 through 1.1.4. Blends of fibers shall also be tested by these methods.  
1.1.1 Procedure 1—This oven-drying technique, using ambient air heated to 105 °C, shall be used in any situation in which a simple and convenient method for routine process control or when in-plant evaluation is needed to determine an approximation of the moisture content or pickup. It is not recommended for jute or grease wool, or for acceptance testing in commercial transactions.  
1.1.2 Procedure 2—Oven-drying technique, using air from the standard atmosphere air for testing textiles that is heated to 105 °C and other refinements in technique, shall be used as a basis for commercial transactions for all materials for which it is known that no significant quantity of non-aqueous volatile matter is present on, or in, the material to be tested.
Note 1: The air supply for Procedure 2 has been changed from desiccated air to the air from the standard atmosphere for testing textiles because the latter is in common use and is prescribed in Test Method D494 for commercial mass of a shipment. By agreement, however, desiccated air may be used.  
1.1.3 Procedure 3—This oven-drying technique uses specimens in moisture-equilibrium under specified conditions and an oven with an air supply of specified temperature and relative humidity heated to 105 °C, and other refinements in technique. The procedure is used to determine the moisture content or pickup of a material i...

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ASTM D2654-22 - Standard Test Methods for Moisture in Textiles
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Standards Content (Sample)

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.
Designation: D2654 − 22
Standard Test Methods for
1
Moisture in Textiles
This standard is issued under the fixed designation D2654; 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 U.S. Department of Defense.
1. Scope The procedure is used to determine the moisture content or
pickup of a material in equilibrium conditions, usually the
1.1 These test methods cover measurement of moisture in
standard atmosphere for testing textiles.
textile materials as (1) moisture content or pick-up using
ambient air for oven-drying, (2) moisture content or pick-up
NOTE 2—The previous Procedure 3 for determining moisture using
using standard atmosphere for testing textiles for oven-drying, distillation with toluene has been dropped from this method because it is
essentially the same as Test Method D2462 which is the preferred method
(3) moisture content or pick-up at moisture equilibrium, and
for jute and grease wool in any circumstance. Test Method D2462 is the
(4) moisture regain. These test methods are applicable to all
preferred method for any material in which it is known, or suspected, that
fibers natural or man-made, and in all forms from fiber or
a significant quantity of nonaqueous and non-water miscible volatile
filament to finished fabric, subject to the limitations set forth in
matter is present.
1.1.1 through 1.1.4. Blends of fibers shall also be tested by
1.1.4 Procedure 4—This new technique is for determination
these methods.
of actual moisture regained by a material under specified
1.1.1 Procedure 1—This oven-drying technique, using am-
conditions after the material has been extracted by a suitable
bient air heated to 105 °C, shall be used in any situation in
procedure, if surface materials are present, and dried in vacuum
which a simple and convenient method for routine process
at a low temperature
control or when in-plant evaluation is needed to determine an
1.2 In Procedures 1, 2, and 3, alternative techniques are
approximation of the moisture content or pickup. It is not
described for weighing oven-dried specimens: in the oven
recommended for jute or grease wool, or for acceptance testing
while hot, and outside the oven at room temperature.
in commercial transactions.
1.1.2 Procedure 2—Oven-drying technique, using air from
1.3 The word water refers to the chemical compound H 0.
2
the standard atmosphere air for testing textiles that is heated to
The terms water and moisture are frequently used interchange-
105 °C and other refinements in technique, shall be used as a
ably in the literature and in the trade even when the “moisture”
basis for commercial transactions for all materials for which it
is known to contain other volatile materials. When the loss
is known that no significant quantity of non-aqueous volatile
during oven exposure is not known to be all water, it shall be
matter is present on, or in, the material to be tested.
considered a “volatiles loss” rather than a “moisture loss” for
NOTE 1—The air supply for Procedure 2 has been changed from technical accuracy.
desiccated air to the air from the standard atmosphere for testing textiles
1.4 Moisture calculations commonly involve the mass of a
because the latter is in common use and is prescribed in Test Method D494
specimen that has been dried by heating in an oven. If the air
for commercial mass of a shipment. By agreement, however, desiccated
air may be used.
in the oven contains moisture, the oven-dried specimen will
contain moisture (in equilibrium with that in the oven air) even
1.1.3 Procedure 3—This oven-drying technique uses speci-
when it no longer shows a significant change in mass.
mens in moisture-equilibrium under specified conditions and
Therefore, if a very precise measurement of the moisture
an oven with an air supply of specified temperature and relative
present is required and oven drying is used, the mass must be
humidity heated to 105 °C, and other refinements in technique.
exposed to desiccated air until it shows no further significant
change in mass.
1
These test methods are under the jurisdiction of ASTM Committee D13 on
NOTE 3—Other ASTM Standards related to the determination of
Textiles and are the direct responsibility of Subcommittee D13.51 on Conditioning,
moisture of textile materials are Test Methods D1576, D2495, and D2118.
Chemical and Thermal Properties.
Current edition approved March 1, 2022. Published Ap
...

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