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About This Item
Full Description
1.1''This test method covers the measurement of yarn number up to 4000 dtex (3600 denier) and related variability properties of filament and spun yarns using an automated tester with capability for measuring mass variability characteristics.
1.2''Yarn number variability properties include percent density spread (%DS), coefficient of variation (%CV), density frequency variation.
Note 1:''For determination of yarn number by use of reel and balance, refer to Test Method D1907. For another method of measuring variability (unevenness) in yarn, refer to Test Method D1425.
1.3''The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore to ensure conformance with this standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.4''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.
1.5''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.
Document History
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ASTM D6612-00(2022)
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Standard Test Method for Yarn Number and Yarn Number Variability Using Automated Tester- Most Recent
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ASTM D6612-00(2016)
Standard Test Method for Yarn Number and Yarn Number Variability Using Automated Tester- Historical Version
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ASTM D6612-00(2011)
Standard Test Method for Yarn Number and Yarn Number Variability Using Automated Tester- Historical Version
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ASTM D6612-00(2006)e1
Standard Test Method for Yarn Number and Yarn Number Variability Using Automated Tester- Historical Version
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ASTM D6612-00
Standard Test Method for Yarn Number and Yarn Number Variability Using Automated Tester- Historical Version