1、Designation:D741007(Reapproved 2012)Standard Practice forQualification of Cotton Classification Instruments for CottonMarketing1This standard is issued under the fixed designation D7410;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,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.1.Scope1.1 This practice provides two options for the qualificationof cotton classification instruments:option 1,newly in
3、stalledcotton classification instrumentation,or option 2,annual veri-fication of cotton classification instrumentation using evalua-tion cottons,trash evaluation images,and color evaluation fibersamples for the fiber measurements of micronaire reading,upper half mean length,uniformity index,breaking
4、 tenacity(strength),Rd(color reflectance),+b(color yellowness),per-cent area(trash),and particle count(trash).1.2 This practice covers the technical requirements to vali-date the consistency of data reported by a cotton classificationinstrument.1.2.1 The practice can be used when new equipment isins
5、talled or it can be used to perform annual verification forconsistency of reported data.1.2.2 The practice can be used to qualify cotton classifica-tion instruments using evaluation cottons,trash evaluationimages,and color evaluation fiber samples.These data can beused for fiber measurements of micr
6、onaire reading,upper halfmean length,uniformity index,strength,color reflectance,andtrash.1.3 The values stated in English units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 This standard does not purport to address all of thesafety concerns,if any,ass
7、ociated 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:2D123 Terminology Relating to TextilesD1776 Practice for Co
8、nditioning and Testing TextilesD2495 Test Method for Moisture in Cotton by Oven-DryingD7139 Terminology for Cotton Fibers2.2 Other Documents:Guidelines for HVI Testing,July 2001,United States De-partment of Agriculture(USDA),Agricultural MarketingService(AMS),Cotton Program,3275 Appling Road,Memphis
9、 TN 38133 http:/www.ams.usda.gov/cotton/cnpubs.htmUSDAThe Classification of Cotton,April 2001,AgriculturalHandbook;United States Department of Agriculture,Ag-ricultural Marketing Service,Cotton Program,3275 Ap-plingRoad,MemphisTN38133http:/www.ams.usda.gov/cotton/cnpubs.htm3.Terminology3.1 The follo
10、wing terms are relevant to this standard:3.1.1+b(color yellowness)3.1.2 breaking tenacity(strength)3.1.3 micronaire reading3.1.4 particle count(trash)3.1.5 percent area(trash)3.1.6 rd(color reflectance)3.1.7 uniformity index3.1.8 upper half mean length3.2 Definitions:3.2.1 color evaluation fiber sam
11、ples,nas established byUnited States Department of Agriculture(USDA),cottonsamples based upon USDA established standard values for Rd(color reflectance)and+b(color yellowness).3.2.2 cotton classification instrument,nan integrated in-strument utilized for the classification of cotton that measuresmic
12、ronaire reading,upper half mean length,uniformity index,1This practice is under the jurisdiction ofASTM Committee D13 on Textiles andis the direct responsibility of Subcommittee D13.11 on Cotton Fibers.Current edition approved July 1,2012.Published August 2012.Originallyapproved in 2007.Last previou
13、s edition approved in 2007 as D741007.DOI:10.1520/D7410-07R12.2For 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.Copy
14、right ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 breaking tenacity(strength),Rd(color reflectance),+b(coloryellowness),percent area(trash)and particle count(trash).3.2.3 evaluation cottons,nas established by United StatesDepartment of Agricult
15、ure(USDA),cottons that have estab-lished standard values for micronaire reading,upper half meanlength,uniformity index and breaking tenacity(strength).3.2.4 micronaire-specific evaluation cottons,nas estab-lished by United States Department of Agriculture(USDA),cottons that have established standard
16、 values for micronairereading.3.2.5 trash evaluation images,nas established by UnitedStates Department of Agriculture(USDA),photographic im-ages of reference cottons with established standard values forpercent area(trash)and particle count(trash).3.3 For all terminology related to cotton fibers,see Termi-nology D7139.3.4 For all terminology related to textiles,see TerminologyD123.4.Summary of Practice4.1 The cotton classification instrument shall perform aseries of tests on evaluation cottons,tr
