ASTM D584-10
(Test Method)Standard Test Method for Wool Content of Raw Wool-Laboratory Scale
Standard Test Method for Wool Content of Raw Wool-Laboratory Scale
SIGNIFICANCE AND USE
This test method is considered satisfactory for acceptance testing of commercial shipments since this test method has been used extensively in the trade for acceptance testing.
In case of dispute arising from differences in reported test results when using Test Method D584 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative testing 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 homogenous as possible and that are from a lot of the type material in question. The test specimens should then be 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 known bias.
The wool-base content of wool in any condition or form is a basic quantity. From it may be calculated commercial masses or yields in any of the various recognized defined systems used in international commerce (Note 1).
The procedures for determining the wool base content of greasy wool provided in this test method and in IWTO Method 19-85(E) are in essential agreement.
Note 3—This is not true for scoured wool, as IWTO Method 19-85(E) does not require rescouring of scoured wool containing less than 5% residual grease.
Not all of the wool base present in a lot of raw wool can be recovered in useful form by commercial cleaning operations. The amount of wool loss varies, depending on factors such as the character of the wool, the nature and percentage of the impurities present, the cleaning process and equipment used, and so...
SCOPE
1.1 This test method covers a laboratory procedure for the determination of the wool base content and the clean wool fiber present in samples of raw wool. This test method is also applicable to other animal fibers such as mohair, cashmere, alpaca, and camel hair.
Note 1—Sampling of lots of raw wool in packages is covered in Practice D1060; the determination of vegetable matter and other alkali-insoluble impurities in scoured wool is covered in Test Method D1113; the determination of wool content on a commercial scale is covered in Test Method D1334. For factors for the conversion of woolbase content to its equivalent in terms of scoured wool, top, or noil of various commercially specified compositions (formerly covered in the appendix of this test method), refer to Practice D2720.
Note 2—Because of the trade practice the term weight is used in this test method instead of the technically correct term mass.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
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Designation: D584 − 10
Standard Test Method for
1
Wool Content of Raw Wool—Laboratory Scale
This standard is issued under the fixed designation D584; 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 D1334 Test Method for Wool Content of Raw Wool—
Commercial Scale
1.1 This test method covers a laboratory procedure for the
D2525 Practice for Sampling Wool for Moisture
determinationofthewoolbasecontentandthecleanwoolfiber
D2720 Practice for Calculation of Commercial Weight and
present in samples of raw wool. This test method is also
Yield of Scoured Wool, Top, and Noil for Various Com-
applicable to other animal fibers such as mohair, cashmere,
mercial Compositions
alpaca, and camel hair.
D4845 Terminology Relating to Wool
NOTE 1—Sampling of lots of raw wool in packages is covered in
E337 Test Method for Measuring Humidity with a Psy-
Practice D1060; the determination of vegetable matter and other alkali-
chrometer (the Measurement of Wet- and Dry-Bulb Tem-
insolubleimpuritiesinscouredwooliscoveredinTestMethod D1113;the
peratures)
determination of wool content on a commercial scale is covered in Test
Method D1334. For factors for the conversion of woolbase content to its
2.2 Other Standard:
equivalent in terms of scoured wool, top, or noil of various commercially
IWTO-19-85 (E) Method for the Determination of Wool
specified compositions (formerly covered in the appendix of this test
Base, Vegetable Matter Base; IWTO Clean Wool Content;
method), refer to Practice D2720.
3
IWTO Scoured Yield in Raw Wool
NOTE 2—Because of the trade practice the term weight is used in this
test method instead of the technically correct term mass.
3. Terminology
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
3.1 For all terminology relating to D13.13, Wool and Wool
standard. Felt, refer to Terminology D4845.
3.1.1 The following terms are relevant to this standard:
1.3 This standard does not purport to address all of the
clean wool fiber present, other alkali-insoluble impurities,
safety concerns, if any, associated with its use. It is the
oven-dried, raw wool, vegetable matter base, vegetable matter
responsibility of the user of this standard to establish appro-
present, wool base, yield.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3.2 For definitions of other textile terms used in this test
method, refer to Terminology D123.
2. Referenced Documents
2
4. Summary of Test Method
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
4.1 The entire sample, or each test specimen drawn there-
D584 Test Method for Wool Content of Raw Wool—
from in a specified manner, is weighed, scoured, dried, and
Laboratory Scale
reweighed. The oven-dry scoured wool is tested to determine
D1060 PracticeforCoreSamplingofRawWoolinPackages
its content of alcohol-extractable matter, mineral matter (ash),
for Determination of Percentage of Clean Wool Fiber
vegetable matter base, and other alkali-insoluble impurities.
Present
The wool-base content, laboratory scoured yield, clean wool
D1113 Test Method for Vegetable Matter and Other Alkali-
fiber present, and vegetable matter present are calculated as
Insoluble Impurities in Scoured Wool
percentages of the mass of the raw wool sample.
5. Significance and Use
1
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
5.1 This test method is considered satisfactory for accep-
and is the direct responsibility of Subcommittee D13.13 on Wool and Felt.
tance testing of commercial shipments since this test method
Current edition approved June 1, 2010. Published June 2010. Originally
approved in 1940. Last previous edition approved in 2005 as D584 – 96 (2005).
has been used extensively in the trade for acceptance testing.
DOI: 10.1520/D0584-10.
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 Specifications of Test Methods, International Wool Textile Organization,
the ASTM website. International Wool Secretariat, Ilkley, West Yorkshire, U.K. LS298PB.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D584 − 10
5.1.1 In case of dispute arising from differences in reported inthechambermaybecompressed,andopeningsinthebottom
test results when using Test Meth
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D584–96 (Reapproved 2005) Designation:D584–10
Standard Test Method for
1
Wool Content of Raw Wool—Laboratory Scale
This standard is issued under the fixed designation D584; 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
1.1 This test method covers a laboratory procedure for the determination of the wool base content and the clean wool fiber
present in samples of raw wool. This test method is also applicable to other animal fibers such as mohair, cashmere, alpaca, and
camel hair.
NOTE 1—Sampling of lots of raw wool in packages is covered in Practice D1060; the determination of vegetable matter and other alkali-insoluble
impurities in scoured wool is covered in Test Method D1113; the determination of wool content on a commercial scale is covered in Test Method D1334.
For factors for the conversion of woolbase content to its equivalent in terms of scoured wool, top, or noil of various commercially specified compositions
(formerly covered in the appendix of this test method), refer to Practice D2720.
NOTE 2—Because of the trade practice the term weight is used in this test method instead of the technically correct term mass.
1.2
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
D584 Test Method for Wool Content of Raw WoolLaboratory Scale
D1060 Practice for Core Sampling of Raw Wool in Packages for Determination of Percentage of Clean Wool Fiber Present
D1113 Test Method for Vegetable Matter and Other Alkali-Insoluble Impurities in Scoured Wool
D1334 Test Method for Wool Content of Raw WoolCommercial Scale
D2525 Practice for Sampling Wool for Moisture
D2720 Practice for Calculation of Commercial Weight and Yield of Scoured Wool, Top, and Noil for Various Commercial
Compositions
D4845 Terminology Relating to Wool
E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
2.2 Other Standard:
IWTO-19-85 (E) Method for the Determination of Wool Base, Vegetable Matter Base; IWTO Clean Wool Content; IWTO
3
Scoured Yield in Raw Wool
3. Terminology
3.1Definitions:
3.1.1clean wool fiber present, n—in raw wool, the mass of wool base present in the raw wool, adjusted to a moisture content
of 12%, an alcohol-extractable content of 1.5%, and a mineral matter content of 0.5%.
3.1.2other alkali-insoluble impurities, n—in scoured wool, the oven-dried, ash-free, alcohol-extractives-free, alkali-insoluble
substances other than vegetable matter base, such as skin, cotton or other fibers, paper, string, tag (dung) pieces, and paint pieces,
and so forth.
3.1.3oven-dried, adj—the condition of a material that has been heated under prescribed conditions of temperature and humidity
until there is no further significant change in its mass.
1
This test method is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.13 on Wool and Wool Felt.
Current edition approved Jan.June 1, 2005.2010. Published March 2005.June 2010. Originally approved in 1940. Last previous edition approved in 19962005 as D584–96.
DOI: 10.1520/D0584-96R05. – 96 (2005). DOI: 10.1520/D0584-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Specifications of Test Methods, International Wool Textile Organization, International Wool Secretariat, Ilkley, West Yorkshire, U.K. LS298PB.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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D584–10
3.1.3.1Discussion—The conditions prescribed in this test method are heating to 105 6 2°C in a forced-draft oven supplied with
air from an atmosphere having a relative humidity o
...
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