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This test method covers a procedure that uses an Optical Fiber Diameter Analyser (OFDA) for the determination of the average fiber diameter and the fiber diameter variation in wool and other animal fibers in their various forms.
Formerly under the jurisdiction of Committee D13 on Textiles, this test method was withdrawn in January 2021 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the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 a procedure that uses an Optical Fiber Diameter Analyser (OFDA) for the determination of the average fiber diameter and the fiber diameter variation in wool and other animal fibers in their various forms.
Note 1—This test method may also be applied to other fibers having a round cross section such as some polyamides, polyesters, and glass; it may also be applied to a limited number of polyacrylics and regenerated cellulose-type fibers.
Note 2—In subsequent sections of this test method, the term “wool” also signifies other animal fibers where applicable.
1.2 The OFDA reports average fiber diameter and standard deviation of fiber diameter in micrometer units (μm). The coefficient of variation of fiber diameter is reported as a percentage.
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 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
D584 Test Method for Wool Content of Raw Wool--Laboratory Scale
D1060 Practice for Core Sampling of Raw Wool in Packages for Determination of Percentage of Clean Wool Fiber Present
D1776 Practice for Conditioning and Testing Textiles
D2130 Test Method for Diameter of Wool and Other Animal Fibers by Microprojection
D2252 Specification for Fineness of Types of Alpaca
D2816 Test Method for Cashmere Coarse-Hair Content in Cashmere
D3991 Specifications for Fineness of Wool or Mohair and Assignment of Grade
D3992 Specifications for Fineness of Wool Top or Mohair Top and Assignment of Grade
D4845 Terminology Relating to Wool
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ASTM D6500-00(2012)e1, Standard Test Method for Diameter of Wool and Other Animal Fibers Using an Optical Fiber Diameter Analyser (Withdrawn 2021), ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top