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ASTM D1576-22

(Test Method)

Standard Test Method for Moisture in Wool by Oven-Drying

Standard Test Method for Moisture in Wool by Oven-Drying

SIGNIFICANCE AND USE
5.1 Test Method D2462 for the determination of the moisture in wool by distillation with toluene is the preferred method for testing wool for moisture for the acceptance testing of commercial shipments. If, however, the purchaser and the supplier agree, Test Method D1576 for the determination of the moisture in wool by oven drying may be used instead. Comparative tests as directed in 5.1.1, may be advisable.  
5.1.1 In case of a dispute arising from differences in reported test results when using Test Method D1576 for acceptance testing of commercial shipments, the purchaser and the supplier should 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 should take a group of test specimens which are as homogeneous as possible and which are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t-test for unpaired data and an acceptable probability level chosen by the two parties before 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 This test method is a simple and convenient method for routine process control, in-plant evaluation, estimation of moisture content of a lot of wool, or any other purpose for which a high degree of reproducibility is not necessary (see Section 13).
SCOPE
1.1 This test method covers the determination of the amount of moisture present in ordinary commercial and industrial samples of wool in all forms except grease wool, using the oven-drying technique.  
1.2 Formulas for calculating the moisture content (as-received basis) and moisture regain (oven-dried basis) are given. It is always important to use the correct term which corresponds to the basis used in the calculation (see 12.2.1).  
Note 1: The determination of moisture content for textile materials in general is covered in Test Methods D2654, and an optimal method for determining the moisture in wool by distillation with toluene is covered in Test Method D2462. A method for sampling wool for the determination of moisture in wool is covered in Practice D2525. The oven-drying method has been adapted for cotton in Test Method D2495.  
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, health, and environmental 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.

General Information

Status
Published
Publication Date
31-May-2022
ICS
59.060.10 - Natural fibres
Technical Committee
D13 - Textiles
Drafting Committee
D13.13 - Wool and Felt
Current Stage
Ref Project

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ASTM D1576-22 - Standard Test Method for Moisture in Wool by Oven-DryingASTM D1576-22 - Standard Test Method for Moisture in Wool by Oven-Drying
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ASTM D1576-22 - Standard Test Method for Moisture in Wool by Oven-Drying
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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: D1576 − 22
Standard Test Method for
1
Moisture in Wool by Oven-Drying
This standard is issued under the fixed designation D1576; 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.
1. Scope D2462 Test Method for Moisture in Wool by Distillation
3
With Toluene (Withdrawn 2022)
1.1 This test method covers the determination of the amount
D2495 Test Method for Moisture in Cotton by Oven-Drying
of moisture present in ordinary commercial and industrial
D2525 PracticeforSamplingWoolforMoisture(Withdrawn
samples of wool in all forms except grease wool, using the
3
2022)
oven-drying technique.
D2654 Test Methods for Moisture in Textiles
1.2 Formulas for calculating the moisture content (as-
D3333 Practice for Sampling Manufactured Staple Fibers,
received basis) and moisture regain (oven-dried basis) are
Sliver, or Tow for Testing
given. It is always important to use the correct term which
D4845 Terminology Relating to Wool
corresponds to the basis used in the calculation (see 12.2.1).
3. Terminology
NOTE 1—The determination of moisture content for textile materials in
general is covered in Test Methods D2654, and an optimal method for
3.1 For all terminology related to D13.13, Wool and Felt,
determining the moisture in wool by distillation with toluene is covered in
see Terminology D4845.
Test Method D2462.Amethod for sampling wool for the determination of
3.1.1 The following terms are relevant to this standard:
moisture in wool is covered in Practice D2525. The oven-drying method
grease wool; moisture content; moisture-free; moisture regain;
has been adapted for cotton in Test Method D2495.
oven-dried; pulled wool; raw wool; recycled wool; scoured
1.3 This standard does not purport to address all of the
wool; virgin wool; wool; wool, as defined in the Wool Products
safety concerns, if any, associated with its use. It is the
Labeling Act of 1939.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- 3.2 FordefinitionsofallothertextiletermsseeTerminology
mine the applicability of regulatory limitations prior to use.
D123.
1.4 This international standard was developed in accor-
4. Summary of Test Method
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 A specimen of wool material is weighed and then dried
Development of International Standards, Guides and Recom-
to constant mass at 105 °C 6 2 °C in an oven supplied with
mendations issued by the World Trade Organization Technical
ambient air. The loss in mass is considered moisture and
Barriers to Trade (TBT) Committee.
reported as either moisture content or moisture regain. Direc-
tions are given for the adjustment of the observed results for
2. Referenced Documents
any change in the moisture content after sampling and before
2
2.1 ASTM Standards:
drying.
D123 Terminology Relating to Textiles
D1060 PracticeforCoreSamplingofRawWoolinPackages 5. Significance and Use
for Determination of Percentage of Clean Wool Fiber
5.1 Test Method D2462 for the determination of the mois-
Present
tureinwoolbydistillationwithtolueneisthepreferredmethod
D1776 Practice for Conditioning and Testing Textiles
for testing wool for moisture for the acceptance testing of
D2258 Practice for Sampling Yarn for Testing
commercial shipments. If, however, the purchaser and the
supplieragree,TestMethodD1576forthedeterminationofthe
1 moisture in wool by oven drying may be used instead.
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
and is the direct responsibility of Subcommittee D13.13 on Wool and Felt. Comparative tests as directed in 5.1.1, may be advisable.
CurrenteditionapprovedJune1,2022.PublishedJuly2022.Originallyapproved
5.1.1 In case of a dispute arising from differences in
in 1958. Last previous edition approved in 2013 as D1576 – 13 which was
reported test results when using Test Method D1576 for
withdrawn in January 2022 and reinstated in June 2022. DOI: 10.1520/D1576-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Dri
...

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ASTM D2524-22(Test Method)
Standard Test Method for Breaking Tenacity of Wool Fibers, Flat Bundle Method— 18 in. (3.2 mm) Gage Length

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5.1 Test Method D2524 for testing wool fibers for tenacity is considered satisfactory for acceptance testing when the participating laboratories, using a reference wool, have shown acceptable between-laboratory precision. It is recommended that any program of acceptance testing be preceded by an interlaboratory check in the laboratory of the purchaser and the laboratory of the seller on replicate specimens of samples of the material to be evaluated. In cases of dispute, the statistical bias, if any, between the laboratory of the purchaser and the seller should be determined with each comparison being based on testing randomized specimens from one sample of material of the type being evaluated.  
5.2 Values obtained from flat bundle tenacity show a good correlation with values obtained from single fiber tests and require much less time.  
5.3 The basic differences between the procedures described in Test Method D2524 and those described in Test Method D1294 lie in the manner of clamping the bundles and the shorter gage length employed. The special clamps used in this method allow quicker and easier bundle preparation; however, for Test Method D1294 no special clamps are required. Closer agreement with single fiber tenacity is also obtained with Test Method D2524 than when using the procedure in Test Method D1294.  
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1.1 This test method covers the determination of the breaking tenacity of wool fibers as a flat bundle with a 1/8 in. (3.2 mm) clamp separation.  
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1.3 This test method is applicable to wool in any form which can be hand-combed into small bundles of parallelized fibers.  
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ASTM D2525-22(Practice)
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5.1 This recommended practice furnishes directions for the sampling of wool of the various forms indicated in Section 1, in order that correct probability statements may be made about the relationship between the sample mean and the population mean. If these statements are to be correct, certain conditions, which are stated, must hold.  
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1.1 This practice covers the design of a sampling plan to be used to obtain samples for the determination of the moisture content of grease wool, scoured wool, carded wool, garnetted wool, wool top and intermediate products, and rovings.  
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ASTM D2968-22(Test Method)
Standard Test Method for Med and Kemp Fibers in Wool and Other Animal Fibers by Microprojection

SIGNIFICANCE AND USE
5.1 Test Method D2968 for the determination of med and kemp fibers by microprojection may be used for the acceptance testing of commercial shipments of wool and other animal fibers, but caution is advised since only a few types of animal fibers have been subjected to interlaboratory tests to ascertain the precision of tests for med and kemp fibers by this test method. Comparative tests as directed in 5.1.1 may be advisable.  
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5.2 Knowledge of the incidence of med fibers and kemp fibers in wool and other animal fibers is of importance to manufacturers of woven or knitted fabrics because of the apparent dye resistance and light reflectance qualities of these fibers. This is not to imply that all kemp fibers will resist dye and all med fibers will accept dye normally. In practice, a proportion of kemp fibers will appear normal after dyeing and a proportion of med fibers will appear chalky white after dyeing. From the perspective of visual and aesthetic problems, medullated fibers hav...
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ASTM D2462-22(Test Method)
Standard Test Method for Moisture in Wool by Distillation With Toluene

SIGNIFICANCE AND USE
5.1 Test Method D2462 for testing for moisture in wool is considered satisfactory for acceptance testing of commercial shipments since current estimates of between-laboratory precision are acceptable.  
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5.2 This test method is the preferred method for all suitable samples of wool where it is important to obtain a result free from the possible biases, introduced by the conditions discussed in 5.3 and 5.4.  
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1.3 This test method is not applicable to material known to contain any steam-distillable, water-soluble matter. If it is suspected that such matter is present, the method should be used with caution.  
1.4 Xylene or other solvents should not be substituted for toluene as no other solvents have been evaluated for use in this standard.  
Note 1: The determination of moisture in wool by oven-drying is covered in Test Method D1576 and for textile materials in general in Test Methods D2654. A method for sampling wool for the determination of moisture in wool is covered in Practice D2525.  
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ASTM D2130-22(Test Method)
Standard Test Method for Diameter of Wool and Other Animal Fibers by Microprojection

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5.1 This test method specifies a sampling and testing procedure for the measurement of average fiber diameter and variation in diameter of animal fibers as required in Test Method D2968.  
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1.1 This test method covers a procedure, using the microprojector, for the determination of the average fiber diameter and the fiber diameter variation on wool and other animal fibers, such as mohair, cashmere, alpaca, camel's hair, etc. (Note 1) in their various forms.  
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Note 2: In subsequent sections of this test method, the term “wool” also signifies mohair or other fibers if the circumstances are applicable.
Note 3: For fineness specifications for wool, wool top, mohair, mohair top, alpaca, and cashmere, refer to Specifications D3991 and D3992, Specification D2252, Test Method D2816.  
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ASTM D1294-22(Test Method)
Standard Test Method for Tensile Strength and Breaking Tenacity of Wool Fiber Bundles 1-in. (25.4 mm) Gage Length

SIGNIFICANCE AND USE
5.1 Test Method D1294 for the determination of tensile strength may be used for the acceptance testing of commercial shipments of wool, but caution is advised since technicians may fail to get good agreement between results. Comparative tests as directed in 5.1.1 may be advisable.  
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5.3 Elongation may be obtained also but the accuracy of elongation measurements is limited and their determination is, therefore, not included as a formal part of this test method.  
5.4 The basic differences between the procedures employed in this test method and those of Test Method D2524 are in the gage lengths employed and the methods of clamping. In Test Method D2524, specific clamps are required whereas in Test Method D1294, any conventional clamps may be used. Results for breaking load determined by Test Method D2524 average 30 % higher than ...
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1.1 This test method covers the determination of the breaking force (or load) and estimation of the tensile strength and tenacity of wool fiber bundles with a 1-in. (25.4 mm) gage length. A procedure for preparation of the fiber bundle is included.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Because the instrument is calibrated in inch-pound units, inch-pound units are shown first, contrary to Committee D13 policy.  
Note 1: For other methods of measuring breaking tenacity of fiber bundles, refer to Test Methods D1445 and D2524.
Note 2: This test method can be used for other fibers that lend themselves to the same kind of preparation but the difference in density must be taken into account when calculating the tensile strength. It is not necessary to know or correct for the density of a fiber when calculating breaking tenacity.  
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ASTM D1574-22(Test Method)
Standard Test Method for Extractable Matter in Wool and Other Animal Fibers

SIGNIFICANCE AND USE
5.1 Test Method D1574 is considered satisfactory for acceptance testing since the method has been used extensively in the trade for acceptance testing.  
5.1.1 In case of a dispute arising from differences in reported test results when using Test Method D1574 for acceptance testing of commercial shipments, the purchaser and the supplier should 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 should 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 should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t-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 This test method may be used to estimate the quantity of oil, grease, and waxy materials remaining on or in wool fibers after scouring, or the quantity of lubricant added before carding or remaining after carding, or the quantity of such materials added or removed in subsequent processing operations.  
5.3 The residues obtained in this test may be subjected to chemical analysis for identification and assay of the component materials, if desired.  
5.4 The specified solvent in this test method does not remove some materials, such as soaps, that may be present in wool and hence in some cases may reflect more closely the added content of some extractables in wool such as oils. When such materials are present and an estimate of their quantity is desired, some other solvent or combination of solvents should be used as spec...
SCOPE
1.1 This test method covers the determination of the amount of extractable matter in samples of all forms of wool, except grease wool, that is extractable with a non-flammable vapor degreasing and cleaning solvent.  
1.2 This test method does not cover the determination of the amounts of different components in the extracted matter nor their identification.  
1.3 This test method is suitable for use with other animal fibers.  
Note 1: The determination of extractable matter in yarns and in felts is covered in Test Methods D2257 and D461. For the determination of alcohol-extractable matter in oven-dry scoured wool, refer to Test Methods D584 and D1334.  
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See 5.4 and Note 3.  
1.6 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.

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ASTM D6961/D6961M-09(2021)(Test Method)
Standard Test Method for Color Measurement of Flax Fiber

SIGNIFICANCE AND USE
5.1 Few standards exist to objectively judge flax quality. Color is an important factor in the quality of flax fiber. Natural variations in raw flax fiber, various processing steps, fiber blending, and a wide range of end uses contribute to the need for a standard method of objectively measuring the color of flax fiber. Spectrophotometic data provide an accurate, precise determination of the color of flax fiber. Colorimetric data are obtained through specimen measurement by combining specimen spectral data with data representing a CIE standard observer and a CIE standard illuminant, as described in Practice E308.  
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1.1 This test method covers the instrumental color measurement of flax fiber.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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ASTM D8394-21(Test Method)
Standard Test Method for Automated Measurement of Maturity, Fineness, Ribbon Width, and Micronaire of Cotton Fibers

SIGNIFICANCE AND USE
5.1 Cotton fiber that is on average finer and more mature is more desirable than coarse or immature fiber, although distinction between these qualities cannot be made quickly and accurately using current test methods. Immature fibers break more easily during processing and have a tendency to form into neps (small entanglements) during processing in the spinning mill. These consequences adversely affect yarn and fabric quality and appearance. Yarn and fabric produced from immature fiber is typically also less lustrous and does not take up dye consistently so yarn and fabric appearance may be different after dyeing.  
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5.2.1 Fine fibers are required for fine count yarn manufacture and fiber fineness affects yarn count, evenness and strength. Both fineness and ribbon width are strong genetic traits evident between species and affected by growing conditions within species.  
5.2.2 Micronaire has traditionally been used as a measure of fiber fineness although the value actually measures fiber specific surface area or surface area per unit weight. As a result, micronaire varies concomitantly with both maturity and fineness (see Fig. 2). Maturity and fineness are related to micronaire via Lord’s equation.4
FIG. 2 Relationship Between Micronaire (X), Fineness (H), and Maturity (M)  
5.3 Cottonscope values have been judged against fineness, maturity and ribbon width values produced by examination of thousands of individual, magnified fiber cross-sections. Relationships with equivalent values by these and other older test methods are highly significant5,6 particularly if the number of cross-sections analyzed is high (>3000) and the cross-sections are carefully prepared and measured. Cottonscope measures approximately 20,...
SCOPE
1.1 This test method covers the determination of linear density (gravimetric fineness hereafter stated as fineness), maturity, micronaire, and ribbon width of cotton fibers from a loose, chemically untreated sample taken before harvest, during ginning, during mill processing or unraveled from raw (undyed) yarn or fabric.  
1.2 This test method requires the use of an integrated instrument, for example, the Cottonscope (see Fig. 1), that measures the maturity, fineness, ribbon width, and micronaire of cotton fiber.2
FIG. 1 Cottonscope Instrument
Note 1: For another test method to determine the maturity of cotton fibers, refer to Test Method D1442.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

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ASTM
ASTM D1445/D1445M-12(2021)(Test Method)
Standard Test Method for Breaking Strength and Elongation of Cotton Fibers (Flat Bundle Method)

SIGNIFICANCE AND USE
5.1 This test method is considered satisfactory for acceptance testing when the levels of the laboratories are controlled by the use of the same reference standard cotton samples because the current estimates of between-laboratory precision are acceptable under these conditions. If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, ensure the test samples to be used are as homogeneous as possible, are drawn from the material from which the disparate test results were obtained, and are randomly assigned in equal numbers to each laboratory for testing. The test from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.  
5.2 This test method is useful in research studies to determine the influence of variety, environment, and processing on fiber strength and elongation; and in studies of the relationships between these fiber properties, processing performance, and quality of end-product.  
5.3 Values obtained for flat bundle tenacity and elongation show a high correlation with values measured on single fibers and require much less time and skill.  
5.4 Studies have shown that strength measurements obtained with different types of instruments are highly correlated, but the results are on different levels.3  
5.5 By use of correction factors calculated from tests made on standard calibration samples of known or established test values, the results obtained with different types of instruments at a specified gauge length can be adjusted to comparable levels. Due to the normal variation in cottons, strength test results...
SCOPE
1.1 This test method covers the determination of (1) the tensile strength or breaking tenacity of cotton fibers as a flat bundle using a nominal zero gauge length, or (2) the tensile strength or breaking tenacity and the elongation at the breaking load of cotton fibers as a flat bundle with 1/8-in. [3.2-mm] clamp spacing. This test method is applicable to loose ginned cotton fibers of untreated cottons whether taken before processing or obtained from a textile product.  
1.2 This test method is designed primarily for use with special fiber bundle clamps and special strength testing instruments but may be used with other tensile strength and elongation testing machines when equipped with appropriate adapters to accommodate the fiber clamps.  
Note 1: Other methods for measuring the breaking tenacity of fiber bundles include Test Method D1294, Test for Breaking Strength of Wool Fiber Bundles—1 in gauge Length;2 and D5867, Test Method for Measurement of Physical Properties of Cotton Fibers by High Volume Instruments.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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 Barr...

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