ASTM D4510-05

Standard Test Method for Counting Partial Cleavages in Wool and Other Animal Fibers

SCOPE
1.1 This test method covers a procedure, using the microprojector, for the counting of partial cleavages in wool and other animal fibers.
1.2 This standard does not purport to address all of the safety problems, 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.

General Information

• Status: Historical
• Publication Date: 31-Aug-2005
• Technical Committee: D13 - Textiles
• Drafting Committee: D13.13 - Wool and Felt

Relations

• Replaces: ASTM D4510-93(2000) - Standard Test Method for Counting Particle Cleavages in Wool and Other Animal Fibers
• Effective Date: 01-Sep-2005
• Replaced By: ASTM D4510-05(2009) - Standard Test Method for Counting Partial Cleavages in Wool and Other Animal Fibers (Withdrawn 2018)
• Effective Date: 01-Jul-2009
• Referred By: ASTM D4845-10(2018) - Standard Terminology Relating to Wool
• Effective Date: 01-Sep-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D4510 – 05
Standard Test Method for
Counting Partial Cleavages in Wool and Other Animal
1
Fibers
This standard is issued under the fixed designation D4510; 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 4.1.1 The segmenting of various test specimens in prepara-
tion for testing,
1.1 This test method covers a procedure, using the micro-
4.1.2 The projection on a screen of magnified images of the
projector, for the counting of partial cleavages in wool and
randomly sampled short segments of fiber from the small test
other animal fibers.
specimens, and
1.2 This standard does not purport to address all of the
4.1.3 The measurement of the number of partially cleaved
safety problems, if any, associated with its use. It is the
fibers.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Significance and Use
bility of regulatory limitations prior to use.
5.1 Test Method D4510 for the counting of partial cleav-
2. Referenced Documents ages, may be used for the acceptance testing of commercial
2
shipments of wool and other animal fibers, but caution is
2.1 ASTM Standards:
advised, since information on between-laboratory precision is
D123 Terminology Relating to Textiles
limited. Comparative tests as directed in 5.1.1 may be advis-
D2258 Practice for Sampling Yarn for Testing
able.
D2525 Practice for Sampling Wool for Moisture
5.1.1 In case of a dispute arising from differences in
D4845 Terminology Relating to Wool
reported test results when using this test method for acceptance
2.2 Other Document:
3
testing of commercial shipments, the purchaser and the sup-
Wool Products Labeling Act of 1983
plier should conduct comparative tests to determine if there is
3. Terminology
a statistical bias between their laboratories. Competent statis-
tical assistance is recommended for the investigation of bias.
3.1 For all terminology relating to D13.13, Wool and Wool
As a minimum, the two parties should take a group of test
Felt, refer to Terminology D4845.
specimens that are as homogeneous as possible and that are
3.1.1 The following terms are relevant to this standard:
from a lot of material of the type in question. The test
cashmere, coarse hair, cashmere coarse hair content, cashmere
specimens should then be randomly assigned in equal numbers
down, cashmere hair.
to each laboratory for testing.The average results from the two
3.2 For all other terminology related to textiles, see Termi-
laboratories should be compared using Students t-test for
nology D123.
unpaireddataandanacceptableprobabilitylevelchosenbythe
4. Summary of Test Method
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
4.1 This test method describes a procedure:
supplier must agree to interpret future test results in the light of
the known bias.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD13onTextiles,
5.2 Chemically damaged or tendered fibers are recognizable
and is the direct responsibility of Subcommittee D13.13 on Wool and Wool Felt.
microscopically by qualified operators and should not be
Current edition approved Sept. 1, 2005. Published September 2005. Originally
approved in 1991. Last previous edition approved in 2000 as D4510 – 93 (Reap- counted as partial cleavages. Such fibers exhibit total loss of
proved 2000). DOI: 10.1520/D4510-05.
cuticle, severe surface erosion, tenderizing cracks, longitudinal
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
fibrillation, or a combination of these features (see Figs. 1 and
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2). In a study of deliberately over-carbonized wool at one
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
laboratory,itwasfoundthatwhenmorethan24tenderedfibers
3
Act of Congress, “Wool Products LabelingAct of 1939,” 76th Congress, Third
Session, approved October 14, 1939.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D4510 – 05
FIG. 1 (A) Partial Cleavage—But do not count if it is at the end of
a fiber. The split may have been caused by other means
were seen in 1 m, partial cleavage counts were significantly
higher than on similar fibers that were not overcarbonized.
6. Apparatus and Material
4
6.1 Microprojector —The microscope shall be equipped
with a fixed body tube, a focusable stage
...