ASTM D1334-2005 Standard Test Method for Wool Content of Raw Wool-Commercial Scale《原毛中羊毛含量的商业标准试验方法》.pdf

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1、Designation: D 1334 05Standard Test Method forWool Content of Raw WoolCommercial Scale1This standard is issued under the fixed designation D 1334; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number

2、in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the woolbase content and the clean wool fiber present in a lot of rawwool by commercial-scale sc

3、ouring of the lot followed bylaboratory tests on samples of the scoured wool.NOTE 1The sampling of lots of raw wool in packages is covered inPractice D 1060, and the determination of the wool content of suchsamples is covered in Test Method D 584. The determination of vegetablematter and other alkal

4、i-insoluble impurities in scoured wool is covered inTest Method D 1113. For factors for the conversion of wool base contentto its equivalent in terms of scoured wool, top, or noil of variouscommercially specified compositions, refer to Practice D 2720.NOTE 2The values stated in U.S. Customary Units

5、are to be regardedas the standard because of common commercial practice. The S.I. units inparentheses are provided for information only.NOTE 3Because of trade practice the term “weight” is used in this testmethod instead of the technically correct term “mass”.1.2 This standard does not purport to ad

6、dress all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 123 Termin

7、ology Relating to TextilesD 584 Test Method for Wool Content of Raw WoolLaboratory ScaleD 1060 Practice for Core Sampling of Raw Wool in Pack-ages for Determination of Percentage of Clean Wool FiberPresentD 1113 Test Method for Vegetable Matter and Other Alkali-Insoluble Impurities in Scoured WoolD

8、2720 Practice for Calculation of Commercial Weight andYield of Scoured Wool, Top, and Noil for Various Com-mercial CompositionsD 4845 Terminology for Wool3. Terminology3.1 For all terminology related to wool and wool felt, referto Terminology D 4845.3.1.1 The following terms are relevant to this sta

9、ndard:clean wool fiber present, other alkali-insoluble impurities,oven-dried, raw wool, vegetable matter base, vegetable matterpresent, wool base.3.2 For all other terminology related to textiles, refer toTerminology D 123.4. Summary of Test Method4.1 The entire lot of raw wool is weighed, prepared,

10、scoured, and dried in the usual commercial equipment, withspecial precautions against loss of wool at any stage of theoperations. The commercially dried scoured wool is weighed,then sampled for laboratory determination of its oven-driedweight (mass) and its content of alcohol-extractable matter,mine

11、ral matter, vegetable-matter base, and other alkali-insoluble impurities. The wool base content and the clean woolfiber present are calculated as percentages of the net weight(mass) of the lot of raw wool.5. Significance and Use5.1 This test method is considered satisfactory for use as areferee meth

12、od for the determination of the wool base contentand the clean wool fiber present in a lot of raw wool. If thereare differences of practical significance between reported testresults for two laboratories (or more), comparative test shouldbe performed to determine if there is a statistical bias betwe

13、enthem, using competent statistical assistance. As a minimum,use the samples for such a comparative test that are ashomogenous as possible, drawn from the same lot of materialas the samples that resulted in the disparate results during theinitial testing and randomly assigned in equal numbers to eac

14、hlaboratory. The test results from the laboratories involvedshould be compared using a statistical test for unpaired data,probability level chosen prior to the testing series. If bias isfound, either its cause must be found and corrected, or futureresults for that material be adjusted in considerati

15、on of theknown bias.1This test method is under the jurisdiction ofASTM Committee D13 on Textiles,and is the direct responsibility of Subcommittee D13.13 on Wool and Wool Felt.Current edition approved March 1, 2005. Published April 2005. Originallyapproved in 1954 . Last previous edition approved in

16、2005 as D 1334 96(2005).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.1Copyright ASTM International, 100 Ba

17、rr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.2 This test method is also used in studies aimed atderiving suitable formulas for estimating the allowances to bemade for wool unavoidably lost or destroyed in such commer-cial operations as carding, combing, or carboniz

18、ing.6. Apparatus6.1 Wool Opener, Scouring Bowl Train, DryerUsual com-mercial equipment, with accessories, modified, if necessary, toprevent loss of any significant quantity of wool.6.2 Laboratory Apparatus, for the determination of oven-dried weight (mass), alcohol-extractable matter, mineral mat-te

19、r, and total alkali-insoluble impurities, as described in TestMethods D 584 and D 1113.6.3 Scales, accurate to 1 lb (0.5 kg), for weighing the rawwool and the scoured product.7. Reagents7.1 Scouring Solution AA solution containing approxi-mately 0.3 % by weight (mass) of soda ash (Na2CO3), 0.1 % byw

20、eight (mass) of soap having a titer of not over 25C, and awater-softening agent of the polyphosphate type slightly inexcess of the quantity required to soften the water used.7.2 Scouring Solution BSame as Scouring Solution A butwith only one half the concentration of soda ash and soap.NOTE 4Neutral

21、nonionic detergent of the ethoxylated alkylphenoltype may be substituted for the soap and soda ash or the soap alone inScouring Solutions A and B. Quantity used should reflect normalcommercial practice for obtaining residual grease levels in the range of0.4-0.8 %.7.3 Test ReagentsAs described in Tes

22、t Methods D 584and D 1113 for the determination of alcohol-extractable matterand alkali-insoluble impurities.8. Sampling8.1 Sampling of the lot of raw wool is not required.8.2 For sampling of the scoured wool for determination ofits oven-dried weight (mass) and its residual impurities, see10.4.4.9.

23、Conditioning9.1 Neither preconditioning nor conditioning in the standardatmosphere is required.10. Procedure10.1 WeighingDetermine the net weight (mass) of the lotby weighing each package of raw wool to the nearest 1 lb (0.5kg) and deducting the known or ascertained tare.10.2 Grading and SortingIf r

24、equired, grade or sort theweighed wool, or both. Treat each grade or sort, or both,separately as directed in 10.4, and each waste or off-sort, orboth, as directed in 10.5.10.3 Opening and DustingIf the use of a wool opener orduster is required prior to scouring, recover all wool wastesfrom these ope

25、rations for treatment as directed in 10.5.10.4 Treatment of Grades and SortsSeparately treat eachgrade and sort as follows:10.4.1 ScouringUsing Scouring Solution A in the firstbowl and Scouring Solution B in the second bowl, both at 5263C, scour and rinse by the usual commercial procedure. Makesure

26、that the equipment is free of wool both before and after thescouring and that all wool wastes are recovered.10.4.2 DryingDry the scoured wool at the temperatureand under the operating conditions customary with the equip-ment being used and the type of wool involved. Make sure thatthe equipment is fr

27、ee of wool both before and after the dryingand that all wool wastes are recovered. Store the dried wool,either in bulk form or packaged, for at least 24 h, preferably ina space having an atmosphere not subject to large variations intemperature or humidity during that period.10.4.3 WeighingDetermine

28、to the nearest 1 lb (0.5 kg) thenet weight (mass) of the scoured wool in each package, orother unit, after storage for 24 h (10.4.2).10.4.4 SamplingDuring or immediately after the weigh-ing (10.4.3) select a sample for the laboratory determination ofoven-dried weight (mass), alcohol-extractable matt

29、er, mineralmatter, vegetable matter, and other residual impurities, asfollows:10.4.4.1 If the scoured wool is weighed in bulk form or insoft bags, take at random from each 100 lb (50 kg) a handfulof wool weighing about 1 oz (30 g). Promptly place eachselected portion of wool in a moisture-proof cont

30、ainer ofsuitable size. Seal the container when sampling is complete.10.4.4.2 If the scoured wool is weighed in compressedbales, core sample the bales with the equipment described inPractice D 1060, taking 2 cores (Note 4) from each bale atrandom locations on the sampling surfaces. Promptly placeeach

31、 core in a moisture-proof container of suitable size. Sealthe container when sampling is complete.NOTE 5If the number of bales and the diameter of the sampling tubeare such that the expected weight (mass) of a sample consisting of 2 coresper bale is less than 100 g, increase the number of cores per

32、balesufficiently to ensure a sample weight (mass) of 100 g or more.10.4.5 Laboratory TestsAfter the sample (10.4.4.1 or10.4.4.2) has been in its sealed container for at least 24 h,determine its net weight (mass) to 4 significant figures andmake the following tests:10.4.5.1 Oven-Dried WeightDetermine

33、 the oven-driedweight (mass) of the entire sample, or of a representativespecimen thereof weighing at least 100 g, as directed in TestMethod D 584.10.4.5.2 Alcohol-Extractable A and Mineral MatterEDetermine the percentage of alcohol-extractable matterand mineral matter in the oven-dried sample or sp

34、ecimen(10.4.5.1), as directed in Test Method D 584.10.4.5.3 Alkali-Insoluble ImpuritiesDetermine the per-centage of total alkali-insoluble matter in the oven-driedsample or specimen (10.4.5.1), as directed in Test MethodD 1113.10.5 Treatment of Wastes and Off-SortsUsing the appro-priate procedures i

35、n Test Methods D 584 and D 1113, deter-mine the weight (mass) of wool base present in the severalrecovered wool wastes and off-sorts, if any, resulting from thegrading and sorting operations (10.2).D133405211. Calculation11.1 Calculate the weight (mass) of wool base present ineach grade or sort (10.

36、4) using Eq 1:Wi5 Simi100 2 Ai2 Ei2 Ti!/wi(1)where:Wi= weight (mass) of wool base present in the ithgrade or sort,Si= weight (mass) of commercially dried scouredwool obtained from the ith grade or sort(10.4.3),mi= oven-dried weight (mass) of the entire sampleor of the specimen (10.4.5.1), as the cas

37、e maybe, of the commercially dried scoured woolobtained from the ith grade or sort,Ai,Ei,Ti= contents of mineral matter, alcohol-extractablematter, and total alkali-insoluble matter, re-spectively, in the oven-dried sample or speci-men (10.4.5.1), as a percentage of the weight(mass) of the oven-drie

38、d sample or specimenfrom the ith grade or sort, andwi= net weight (mass) of the entire sample, or ofthe specimen (10.4.5.1), as the case may be,from the ith grade or sort.11.2 Calculate the wool base content of the lot of raw woolusing Eq 2:B 5 100(Wi1 (Wj!/ W (2)where:B = wool base content of the l

39、ot of raw wool, as apercentage of the net weight (mass) of the lot,Wj= weight (mass) of wool base in the jth waste or off-sort(10.5),W = net weight (mass) of the lot of raw wool, andWihas the meaning assigned in 11.1.11.3 Calculate the clean wool fiber present in the lot of rawwool using Eq 3:F 5 B/

40、0.86 (3)where:F = clean wool fiber present in the lot of raw wool, asa percentage of the net weight (mass) of the lot,0.86 = factor for converting a weight (mass) of clean woolfiber present to the corresponding weight (mass) ofwool base content, (see 3.1) andB has the meaning assigned in 11.2.12. Re

41、port12.1 State that the test was made as directed in ASTM TestMethod D 1334. Describe the material or product sampled andthe method of sampling used.12.2 Include the following information:12.2.1 Percentages of wool base content and clean woolfiber present, to the nearest 0.1 percentage point, and12.

42、2.2 Number of packages in the lot, and the net weight(mass) of the raw wool to the nearest 1 lb (0.5 kg).13. Precision and Bias13.1 PrecisionSince the entire lot of raw wool is used upin a test by this method, a precision statement is not applicable.NOTE 6For the precision of the laboratory determin

43、ation of the cleanwool fiber present in the sample of scoured wool (10.4.5), refer to TestMethod D 584.13.2 BiasTest Method D 1334 for testing wool content ofraw wool has no known bias and is generally accepted as areferee method.14. Keywords14.1 content; woolASTM International takes no position res

44、pecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This

45、standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Intern

46、ational Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown be

47、low.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D1334053