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Significance and Use
This test method is considered satisfactory for acceptance testing of commercial shipments of wool and other animal fibers in raw and sliver form because current estimates of between-laboratory precision are acceptable. In cases of disagreement arising from differences in values reported by the purchaser and the supplier when using this test method for acceptance testing, Test Method D2130 shall be used as a referee method.
This test method may be used for determining compliance with average fiber diameter and diameter variation to assign grades when determining conformance of shipments to material specifications given in Specifications D2252, D2816, D3991, and D3992.
The procedures for determining mean fiber diameter and standard deviation of fiber diameter provided in this test method and in IWTO-12 are in essential agreement.
1.1 This test method covers a procedure, using the Sirolan-Laserscan, for the determination of the average fiber diameter and the fiber diameter variation in wool and other animal fibers in their various forms.
1.2 The values stated in SI units are to be regarded as the standard.
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.
Federal StandardsIWTO-12 Measurement of the Mean and Distribution of Fibre Diameter Using the Sirolan-Laserscan Fibre Diameter Analyser
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
E126 Test Method for Inspection, Calibration, and Verification of ASTM Hydrometers
E1750 Guide for Use of Water Triple Point Cells
ICS Number Code 59.060.10 (Natural fibres)
UNSPSC Code 11151508(Wool fibers); 41114705(Textile testing instruments)