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1.1 This test method covers the determination of the percentage of mature fibers in a sample of loose, chemically untreated cotton fibers, whether taken before processing or unravelled from a textile product.
1.2 This test method gives two optional procedures for determining maturity, as follows:
1.2.1 Procedure 1—Sodium Hydroxide Swelling.
1.2.2 Procedure 2—Polarized Light.
Note 1—For other test methods for the determination of maturity of cotton fibers refer to Test Methods D1464 and .
1.3 The values stated in SI units are to be regarded as standard. No other units of measure are included in this standard.
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 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
D1440 Test Method for Length and Length Distribution of Cotton Fibers (Array Method)
D1447 Test Method for Length and Length Uniformity of Cotton Fibers by Photoelectric Measurement
D1464 Practice for Differential Dyeing Behavior of Cotton
D1776 Practice for Conditioning and Testing Textiles
D2480 Test Method for Maturity Index and Linear Density of Cotton Fibers by the Causticaire Method
D7139 Terminology for Cotton Fibers
ICS Number Code 59.060.10 (Natural fibres)
UNSPSC Code 11151507(Cotton fibers)
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ASTM D1442-06(2012), Standard Test Method for Maturity of Cotton Fibers (Sodium Hydroxide Swelling and Polarized Light Procedures), ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top