ASTM D1441-12(2020)

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: D1441 − 12 (Reapproved 2020)
Standard Practice for
Sampling Cotton Fibers for Testing
This standard is issued under the fixed designation D1441; 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 2. Referenced Documents
2.1 ASTM Standards:
1.1 This practice covers procedures for taking a lot sample
of cotton fibers, from a designated source (lot), and reducing D123 Terminology Relating to Textiles
D1440 Test Method for Length and Length Distribution of
the lot sample through a series of steps to produce test
specimens that are representative of the source and suitable for Cotton Fibers (Array Method)
D1442 Test Method for Maturity of Cotton Fibers (Sodium
the determination of fiber properties according to established
procedures. Hydroxide Swelling and Polarized Light Procedures)
D1445 TestMethodforBreakingStrengthandElongationof
1.2 This practice has been used extensively for commercial
Cotton Fibers (Flat Bundle Method)
acceptance testing of cotton fibers as well as for arbitration
D1447 Test Method for Length and Length Uniformity of
testing and research.
Cotton Fibers by Photoelectric Measurement
NOTE 1—This practice is used in taking samples of cotton for testing by
D1448 Test Method for Micronaire Reading of Cotton Fi-
Test Methods D1440, D1442, D1445, D1447, D1448, D1464, D2480,
D2812, D5866 and D5867. bers (Withdrawn 2020)
D1464 Practice for Differential Dyeing Behavior of Cotton
1.3 Theproceduresdonotcovertheselectionofsamplesfor
D1776 Practice for Conditioning and Testing Textiles
the determination of moisture. Special handling and protection
D2480 Test Method for Maturity Index and Linear Density
of the sample from the prevailing atmosphere required for
of Cotton Fibers by the Causticaire Method (Withdrawn
samples taken for the determination of moisture are not
1992)
provided for in this practice. See Test Method D2495.
D2495 Test Method for Moisture in Cotton by Oven-Drying
1.4 The values stated in SI units are to be regarded as
D2812 Test Method for Non-Lint Content of Cotton
standard. No other units of measure are included in this
D5866 Test Method for Neps in Cotton Fibers
standard.
D5867 Test Methods for Measurement of Physical Proper-
ties of Raw Cotton by Cotton Classification Instruments
1.5 This standard does not purport to address all of the
D7139 Terminology for Cotton Fibers
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. 3.1 For all terminology relating to D13.11, Cotton Fibers,
refer to Terminology D7139.
1.6 This international standard was developed in accor-
3.1.1 The following terms are relevant to this standard:
dance with internationally recognized principles on standard-
laboratory sample, lot, in acceptance sampling of cotton, lot
ization established in the Decision on Principles for the
sample, in cotton, and specimen.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
3.2 For all other terminology related to textiles, refer to
Barriers to Trade (TBT) Committee.
Terminology D123.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
ThispracticeisunderthejurisdictionofASTMCommitteeD13onTextilesand contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
is the direct responsibility of Subcommittee D13.11 on Cotton Fibers. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved July 1, 2020. Published July 2020. Originally approved the ASTM website.
in 1952. Last previous edition approved in 2012 as D1441 – 12. DOI: 10.1520/ The last approved version of this historical standard is referenced on
D1441-12R20. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D1441 − 12 (2020)
4. Summary of Practice homogeneous, divide it into rational subgroups; for example,
individual bales in a commercial shipment.
4.1 Sampling procedures for obtaining samples from the lot
9.2.1 Takeportionsofcottonfiberfromdifferentpartsofthe
and for the reduction of the lot samples to the size required for
source carefully and at random to provide a composite lot
fiber test specimens are presented. Steps are outlined to secure
sample of sufficient size.Approximately 100 g is sufficient for
reduction of the amount of cotton fibers to be handled at
most tests.
various stages, so that the reduced sample continues to be
representative of the lot. Provision is made for the omission of
10. Laboratory Sample
intermediate steps in the reduction of the lot sample in cases
where this is desirable or necessary (see 13.1).
10.1 Acceptance Testing:
10.1.1 For bales, take a 100 g subsample of cotton from
5. Significance and Use
opposite sides of each bale in the lot and combine the two
5.1 The reliability of the results of any test method depends
subsamples into a single laboratory sample weighing 200 g.
primarily upon how well the specimens tested represent the
10.1.2 For sliver, beginning with the first material from the
original source material or lot. Failure to provide a test
lead end of the package that has a clean, uniform appearance,
specimen which accurately represents the lot from which it is
take a length weighing at least 100 g as the laboratory sample.
drawn will produce misleading test results regardless of the
If the shipping containers in the lot sample contain multiple
accuracy and precision of the test method.
packages, take a laboratory sample from one package drawn at
random for each container.
6. Apparatus
10.2 Other Testing—From each unit in the lot sample, take
6.1 Mechanical Fiber Blender, designed especially for cot-
a single lab
...