1、Designation:D157404(Reapproved 2013)Standard Test Method forExtractable Matter in Wool and Other Animal Fibers1This standard is issued under the fixed designation D1574;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、 revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the amountof extractable matter in samples of all forms of wool,exceptgrease wool,
3、that is extractable with a non-flammable vapordegreasing and cleaning solvent.1.2 This test method does not cover the determination of theamounts of different components in the extracted matter northeir identification.1.3 This test method is suitable for use with other animalfibers.NOTE1The determin
4、ation of extractable matter in yarns and in feltsis covered in Test Methods D2257 and D461.For the determination ofalcohol-extractable matter in oven-dry scoured wool,refer to Test Meth-ods D584 and D1334.1.4 The values stated in SI units are to be regarded as thestandard.1.5 This standard does not
5、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.See 5.4 and Note 3.2.Referenced Documents2.1 ASTM Standa
6、rds:2D123 Terminology Relating to TextilesD461 Test Methods for Felt(Withdrawn 2003)3D584 Test Method for Wool Content of Raw WoolLaboratory ScaleD1334 Test Method for Wool Content of Raw WoolCommercial ScaleD1576 Test Method for Moisture in Wool by Oven-DryingD2257 Test Method for Extractable Matte
7、r in TextilesD2462 Test Method for Moisture in Wool by DistillationWith TolueneD4845 Terminology Relating to Wool3.Terminology3.1 Definitions:3.1.1 For definitions of textile terms used in this testmethod:animal fiber,extractable matter,grease wool,recycledwool,wool and wool,refer to Terminology D48
8、45.3.2 For definitions of other textile terms used in this testmethod,refer to Terminology D123.4.Summary of Test Method4.1 The specimen is extracted in a Soxhlet apparatus with aspecified halogenated hydrocarbon solvent.The extract isfiltered,the solvent is evaporated,and both the residue and theex
9、tracted specimen are dried and weighed.The amount ofextractable matter is calculated and reported as a percentage ofthe oven-dry mass of the wool specimen,that is,the mass ofthe oven-dried extracted specimen plus the mass of theoven-dried extracted material.4.2 Special procedures are provided to cor
10、rect for errors indetermining the amount of extractable matter as summarized in4.1 if it is known or thought to contain volatile components.5.Significance and Use5.1 Test Method D1574 is considered satisfactory for ac-ceptance testing since the method has been used extensively inthe trade for accept
11、ance testing.5.1.1 In case of a dispute arising from differences inreported test results when using Test Method D1574 foracceptance testing of commercial shipments,the purchaser andthe supplier should conduct comparative tests to determine ifthere is a statistical bias between their laboratories.Com
12、petentstatistical assistance is recommended for the investigation ofbias.As a minimum,the two parties should take a group of testspecimens that are as homogeneous as possible and that arefrom a lot of material of the type in question.The testspecimens should then be randomly assigned in equal number
13、sto each laboratory for testing.The average results from the twolaboratories should be compared using Students t-test forunpaired data and an acceptable probability level chosen by thetwo parties before the testing is begun.If a bias is found,either1This test method is under the jursidiction ofASTM
14、Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.13 on Wool and Felt.Current edition approved July 1,2013.Published September 2013.Originallyapproved in 1958.Last previous edition approved in 2008 as D1574 04(2008).DOI:10.1520/D1574-04R13.2For referenced ASTM standards,v
15、isit 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.Copyright ASTM
16、 International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 its cause must be found and corrected or the purchaser and thesupplier must agree to interpret future test results in the light ofthe known bias.5.2 This test method may be used to estimate the quantity ofoil,grease,and waxy materials remaining on or in wool fibersafter scouring,or the quantity of lubricant added before cardingor remaining after carding,or the quantity of such materialsadded or remove