1. Scope

1.1 This test method covers a procedure, using the microprojector, for the determination of the average fiber diameter and the fiber diameter variation on wool and other animal fibers, such as mohair, cashmere, alpaca, camel's hair, etc. (Note 1) in their various forms.

1.2 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units may be approximate.

Note 1--This test method may also be applied to any fibers having a round cross section and accordingly may be used many times for melt-spun man-made fibers such as polyamides, polyesters, and glass; also it may be applied to a limited number of polyacrylics and regenerated cellulose type fibers. The values given in Appendix X1 for density and correction factors, however, apply only to wool and should not be used for other fibers. For suitable values for the density of other fibers, see Table 5 in Test Methods D629, Quantitative Analysis of Textiles.

Note 2-- In subsequent sections of this test method, the term 'wool' also signifies mohair or other fibers if the circumstances are applicable.

Note 3--For fineness specifications for wool, wool top, mohair, mohair top, alpaca, and cashmere, refer to Specifications D3991 and D3992, Specification D2252, Test Method D2816.

1.3 This standard does not purport to address 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.

ASTM Standards

D123 Terminology Relating to Textiles

D584 Test Method for Wool Content of Raw Wool--Laboratory Scale

D629 Test Methods for Quantitative Analysis of Textiles

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

D2252 Specification for Fineness of Types of Alpaca

D2258 Practice for Sampling Yarn for Testing

D2816 Test Method for Cashmere Coarse-Hair Content in Cashmere

D2968 Test Method for Med and Kemp Fibers in Wool and Other Animal Fibers by Microprojection

D3992 Specifications for Fineness of Wool Top or Mohair Top and Assignment of Grade

Other Standards

Keywords

animal fibers (except wool); diameter; wool ;

ICS Code

ICS Number Code 59.060.10 (Natural fibres)

DOI: 10.1520/D2130-90R01

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