ASTM D3775-17(2023)

Standard Test Method for End (Warp) and Pick (Filling) Count of Woven Fabrics

SIGNIFICANCE AND USE
5.1 This test method is considered satisfactory for acceptance testing of commercial shipments because it has been used extensively in the trade for that purpose.  
5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative test should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, use the samples for such a comparative test that are as homogeneous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing and randomly assigned in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, a probability level chosen prior to the testing series. If 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.  
5.1.2 This test method is suitable for use with narrow fabrics when the count across the total width is measured in the narrow direction and extrapolated to the number of yarns per centimeter (inch).
SCOPE
1.1 This test method covers the measurement of end (warp) and pick (filling) count and is applicable to all types of woven fabrics.  
Note 1: Historically, the term fabric count has been used to describe the end and pick count of woven fabrics. The terms end count and pick count are replacing the term fabric count, to provide clarity.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.2.1 Throughout this document, there will be some instances in which the units do not convert 1:1. This is to acknowledge that this is a global document and that different parts of the world use different units of measurement. Organizations using the metric system wil report the count per 1 cm. Organizations using the English system will report the count per 1 in.  
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.
Note 2: For a current test method for the wale and course count of weft knitted fabrics, refer to Test Method D8007.  
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-Dec-2022
• ICS: 59.080.30 - Textile fabrics
• Technical Committee: D13 - Textiles
• Drafting Committee: D13.60 - Fabric Physical Test Methods B

Standards Content (Sample)

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: D3775 − 17 (Reapproved 2023)
Standard Test Method for
1
End (Warp) and Pick (Filling) Count of Woven Fabrics
This standard is issued under the fixed designation D3775; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers the measurement of end (warp)
D123 Terminology Relating to Textiles
and pick (filling) count and is applicable to all types of woven
D1776 Practice for Conditioning and Testing Textiles
fabrics.
D4850 Terminology Relating to Fabrics and Fabric Test
NOTE 1—Historically, the term fabric count has been used to describe
Methods
the end and pick count of woven fabrics. The terms end count and pick
D7023 Terminology Relating to Home Furnishings
count are replacing the term fabric count, to provide clarity.
D8007 Test Method for Wale and Course Count of Weft
Knitted Fabrics
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
2.2 Other Standard:
3
only.
ANSI/ASQC Z1.4—Inspection by Attributes
1.2.1 Throughout this document, there will be some in-
3. Terminology
stances in which the units do not convert 1:1. This is to
acknowledge that this is a global document and that different
3.1 For all terminology related to D13.59, Fabric Test
parts of the world use different units of measurement. Organi-
Methods, General, refer to Terminology D4850
zations using the metric system wil report the count per 1 cm.
3.1.1 The following terms are relevant to this standard:
Organizations using the English system will report the count count, end, end count, filling, pick, pick count, thread count.
per 1 in.
3.2 For all terminology related to Home Furnishings, refer
to Terminology D7023.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.3 For all other terms related to textiles, refer to Terminol-
responsibility of the user of this standard to establish appro-
ogy D123.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4. Summary of Test Method
4.1 The number of ends per unit distance and picks per unit
NOTE 2—For a current test method for the wale and course count of
distance are determined using suitable magnifying and count-
weft knitted fabrics, refer to Test Method D8007.
ing devices or by raveling yarns from fabrics. See ANSI Z1.4.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Significance and Use
ization established in the Decision on Principles for the
5.1 This test method is considered satisfactory for accep-
Development of International Standards, Guides and Recom-
tance testing of commercial shipments because it has been used
mendations issued by the World Trade Organization Technical
extensively in the trade for that purpose.
Barriers to Trade (TBT) Committee.
5.1.1 If there are differences of practical significance be-
tween reported test results for two laboratories (or more),
comparative test should be performed to determine if there is a
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This test method is under the jurisdiction of ASTM Committee D13 on Fabric contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Physical Test Methods B Standards volume information, refer tot he standard’s Document Summary page on
Current edition approved Jan. 1, 2023. Published August 2023. Replaces the ASTM website.
3
Sections 28 to 34 of Methods D1910 – 64 (1975). Originally approved in 1979. Last Available from American National Standards Institute, 11 W. 42nd St., 13th
ɛ1
previous edition approved in 2017 as D3775 – 17 . DOI: 10.1520/D3775-17R23. Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3775 − 17 (2023)
statistical bias between them, using competent statistical assis- 9. Procedure
tance. As a minimum, use the samples for such a comparative
9.1 General:
test that are as homogeneous as possible, drawn from the same
9.1.1 Count the number of ends and picks in five randomly
lot of material as the
...