ASTM_D_2130_-_13.pdf

Designation:D213013Standard Test Method forDiameter of Wool and Other Animal Fibers byMicroprojection1This standard is issued under the fixed designation D2130;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers a procedure,using themicroprojector,for the determination of the average fiberdiameter and the fiber diameter variation on wool and otheranimal fibers,such as mohair,cashmere,alpaca,camels hair,etc.(Note 1)in their various forms.1.2 The values stated in inch-pound units are to be regardedas the standard.The metric equivalents of inch-pound unitsmay be approximate.NOTE1This test method may also be applied to any fibers having around cross section and accordingly may be used many times formelt-spun man-made fibers such as polyamides,polyesters,and glass;alsoit may be applied to a limited number of polyacrylics and regeneratedcellulose type fibers.The values given in Appendix X1 for density andcorrection factors,however,apply only to wool and should not be used forother fibers.For suitable values for the density of other fibers,see Table5 in Test Methods D629,Quantitative Analysis of Textiles.NOTE2In subsequent sections of this test method,the term“wool”also signifies mohair or other fibers if the circumstances are applicable.NOTE3For fineness specifications for wool,wool top,mohair,mohairtop,alpaca,and cashmere,refer to Specifications D3991 and D3992,Specification D2252,Test Method D2816.1.3This standard does not purport to address the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD584 Test Method for Wool Content of Raw WoolLaboratory ScaleD629 Test Methods for Quantitative Analysis of TextilesD1060 Practice for Core Sampling of Raw Wool in Packagesfor Determination of Percentage of Clean Wool FiberPresentD1776 Practice for Conditioning and Testing TextilesD2252 Specification for Fineness of Types of AlpacaD2258 Practice for Sampling Yarn for TestingD2816 Test Method for Cashmere Coarse-Hair Content inCashmereD2968 Test Method for Med and Kemp Fibers in Wool andOther Animal Fibers by MicroprojectionD3992 Specifications for Fineness of Wool Top or MohairTop and Assignment of GradeD4845 Terminology Relating to WoolE380 Practice for Use of the International System of Units(SI)(the Modernized Metric System)(Withdrawn 1997)32.2 Other Standards:Federal Standard,Official Standard of the United States forGrades of Wool,Section 31.0,Measurement Method forDetermining Grade of Wool,Section 31.2044IWTO-8-66(E)Method of Determining Wool Fiber Diam-eter by the Projection Microscope53.Terminology3.1 For all terminology related to D13.13,Wool and Felt,see Terminology D4845.3.1.1 The following terms are relevant to this standard:average fiber diameter,grade.3.2 For definitions of all other textile terms see TerminologyD123.4.Summary of Test Method4.1 This test method describes procedures for samplingvarious forms of wool and other animal fibers,the reduction of1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.13 on Wool and Felt.Current edition approved July 1,2013.Published August 2013.Originallyapproved in 1961.Last previous edition approved in 2008 as D2130 90(2008).DOI:10.1520/D2130-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Service and Regulatory Announcement,No.135,U.S.Department ofAgriculture,C&MS,April 1966.5International Wool Textile Organization,International Wool Secretariat,RawWool Services,Valley Drive,Ilkley,Yorkshire LS29 8PB,England.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the sample to small test specimens,and the measurement,athigh magnification,of the diameter of a number of fibers fromthe test specimens.From the observed data,computations aremade to obtain the average fiber diameter,a measure ofvariation of fiber diameter and the percentage of medullatedand kemp fibers,if present,as directed in Test Method D2968.5.Significance and Use5.1 This test method specifies a sampling and testing pro-cedure for the measurement of average fiber diameter andvariation in diameter of anima