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This test method covers the determination of the micronaire reading of loose cotton fibers by measuring the resistance of a specific mass (plug) of cotton fibers to air flow under prescribed conditions.
Formerly under the jurisdiction of Committee D13 on Textiles, this test method was withdrawn in January 2020 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
1.1 This test method covers the determination of the micronaire reading of loose cotton fibers by measuring the resistance of a specific mass (plug) of cotton fibers to air flow under prescribed conditions.
Note 1—For other methods for determining the fineness of fibers based on the air-flow principle, refer to Test Method D1449, Test Method for Specific Area and Immaturity Ratio of Cotton Fibers (Arealometer Method), and to Test Method D1282, Test Method for Resistance to Air Flow as an Indication of Average Fiber Diameter of Wool Top, Card Sliver, and Scoured Wool.
1.2 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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D123 Terminology Relating to Textiles
D1282 Test Method for Resistance to Airflow as an Indication of Average Fiber Diameter of Wool Top, Card Sliver, and Scoured Wool
D1441 Practice for Sampling Cotton Fibers for Testing
D1449 Method of Test for Specific Area and Immaturity Ratio of Cotton Fibers (Arealometer Method)
D1776 Practice for Conditioning and Testing Textiles
D5867 Test Methods for Measurement of Physical Properties of Raw Cotton by Cotton Classification Instruments
D7139 Terminology for Cotton Fibers
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ASTM D1448-11, Standard Test Method for Micronaire Reading of Cotton Fibers (Withdrawn 2020), ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top