ASTM D1113-90a(2001)
(Test Method)Standard Test Method for Vegetable Matter and Other Alkali-Insoluble Impurities in Scoured Wool
Standard Test Method for Vegetable Matter and Other Alkali-Insoluble Impurities in Scoured Wool
SIGNIFICANCE AND USE
Test Method D 1113 is considered satisfactory for acceptance testing of commercial shipments, and the procedure has been used extensively in the trade for this purpose, particularly in connection with the determination of clean wool fiber present by Test Method D 584. The procedure in Test Method D 1113 is used by the U.S. Customs Service for the determination of the vegetable matter in importations of raw wool on which the allowance for loss of wool during commercial cleaning is based in part.3
5.1.1 In case of a dispute arising from differences in reported test results when using Test Method D 1113 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 Students 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 light of the known bias.
SCOPE
1.1 This test method covers the determination of the content of oven-dried, ash-free, alcohol extractive-free vegetable matter and other alkali-insoluble impurities present in scoured wool. It is also applicable to "related fibers" such as the hair from the goat, camel, alpaca, and other animals.
Note 1--The determination of clean wool fiber present on a laboratory scale is covered in Test Method D584, the determination of clean wool fiber present on a commercial scale is covered in Test Method D1334, and the calculation of commercial weight and yield of various commercial compositions (formerly covered in Appendix to Test Method D584) is covered in Practice D2720.
1.2 This standard does not purport to address all of the safety problems 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. For specific safety precaution statements, see Section 8.
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Designation:D1113–90a(Reapproved2001)
Standard Test Method for
Vegetable Matter and Other Alkali-Insoluble Impurities in
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Scoured Wool
This standard is issued under the fixed designation D 1113; 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.
1. Scope 3.1.2 oven-dried, adj—the condition of a material that has
been heated under prescribed conditions of temperature and
1.1 This test method covers the determination of the content
humidity until there is no further significant change in its mass.
of oven-dried, ash-free, alcohol extractive-free vegetable mat-
3.1.2.1 Discussion—An oven-dried material will retain a
ter and other alkali-insoluble impurities present in scoured
small amount of moisture that is dependent on the temperature
wool. It is also applicable to “related fibers” such as the hair
and relative humidity of the atmosphere in contact with the
from the goat, camel, alpaca, and other animals.
materialduringthedryingprocess.Anoven-driedmaterialwill
NOTE 1—The determination of clean wool fiber present on a laboratory
only be moisture-free when the air supplied to the drying oven
scale is covered in Test Method D 584, the determination of clean wool
has been previously desiccated.
fiberpresentonacommercialscaleiscoveredinTestMethodD 1334,and
3.1.2.2 Discussion—The term “mass” in the above defini-
the calculation of commercial weight and yield of various commercial
tionisthecorrectdesignationforwhatiscommonlydesignated
compositions (formerly covered in Appendix to Test Method D 584) is
“weight”.
covered in Practice D 2720.
3.1.3 vegetable matter base, n— in raw wool, oven-dried
1.2 This standard does not purport to address all of the
scoured burrs, seeds, twigs, leaves, and grasses, free of mineral
safety concerns, if any, associated with its use. It is the
matter and alcohol-extractable matter.
responsibility of the user of this standard to establish appro-
3.1.4 For the definition of wool and other textile terms used
priate safety and health practices and determine the applica-
in this method, refer to Terminology D 123.
bility of regulatory limitations prior to use. For specific safety
hazard statements, see Section 8.
4. Summary of Test Method
4.1 The wool, or other animal fiber, is dissolved in a boiling
2. Referenced Documents
3% sodium hydroxide solution or a hot 10% sodium hydroxide
2.1 ASTM Standards:
2 solution under specified controlled conditions. The weights of
D 123 Terminology Relating to Textiles
theash-free,oven-driedcomponentsoftheundissolvedresidue
D 584 Test Method for Wool Content of Raw Wool—
are converted by means of tabulated factors to the correspond-
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Laboratory Scale
ing weights of vegetable matter base and other alkali-insoluble
D 1334 Test Method for Wool Content of Raw Wool—
impurities.
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Commercial Scale
D 2720 Practice for Calculation of Commercial Weight and
5. Significance and Use
Yield of Scoured Wool, Top, and Noil for Various Com-
5.1 Test Method D 1113 is considered satisfactory for ac-
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mercial Compositions
ceptance testing of commercial shipments, and the procedure
has been used extensively in the trade for this purpose,
3. Terminology
particularly in connection with the determination of clean wool
3.1 Definitions:
fiber present by Test Method D 584. The procedure in Test
3.1.1 other alkali-insoluble impurities, n—inscouredwool,
Method D 1113 is used by the U.S. Customs Service for the
the oven-dried, ash-free, alcohol-extractives-free, alkali-
determination of the vegetable matter in importations of raw
insoluble substances other than vegetable matter base, such as
wool on which the allowance for loss of wool during commer-
skin, cotton or other fibers, paper string, tag (dung) pieces, and
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cial cleaning is based in part.
paint pieces, etc.
5.1.1 In case of a dispute arising from differences in
reported test results when using Test Method D 1113 for
acceptance testing of commercial shipments, the purchaser and
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ThistestmethodisunderthejurisdictionofASTMCommitteeD13onTextiles,
and is the direct responsibility of Subcommittee D13.13 on Wool and Wool Felt.
Current edition approved Dec. 31, 1990. Published March 1991. Originally
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published as D1113–50T. Last previous edition D1113–78 (1983). Tariff Schedules of the United States, Schedule 3, Part 1, Subpart C, Headnote
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Annual Book of ASTM Standards, Vol 07.01. 1(c).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 1113
the supplier should conduct comparative tests to determine if scou
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