ASTM D2525-1990(2008) 测定羊毛水分的取样的标准实施规程
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【英文标准名称】:StandardPracticeforSamplingWoolforMoisture
【原文标准名称】:测定羊毛水分的取样的标准实施规程
【标准号】:ASTMD2525-1990(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1990
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D13.13
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:moisturecontent;sampling;statistics;wool;Moistureanalysis--textilefabrics/fibers;Samplingtextiles;Woolandwooltop--moisturecontent;Woolandwooltop--sampling
【摘要】:ThisrecommendedpracticefurnishesdirectionsforthesamplingofwoolofthevariousformsindicatedinSection1,inorderthatcorrectprobabilitystatementsmaybemadeabouttherelationshipbetweenthesamplemeanandthepopulationmean.Ifthesestatementsaretobecorrect,certainconditions,whicharestated,musthold.Thisrecommendedpracticerequiresthatadeliberateactofrandomizationbeperformedsothatallpotentialsamplingunitshaveapproximatelythesamechanceofbeingtakenandnosamplingunitisdeprivedofitschanceofbeingtaken.Inanycasewhereinsufficientinformationaboutthevariabilityofthesamplingunitswithinthelotisavailable,directionsaregivenforcalculatingconfidencelimitsforthesamplemeansothatacorrectprobabilitystatementcanstillbemade.1.1Thispracticecoversthedesignofasamplingplantobeusedtoobtainsamplesforthedeterminationofthemoisturecontentofgreasewool,scouredwool,cardedwool,garnettedwool,wooltopandintermediateproducts,androvings.1.2Directionsaregivenforthedesignationofsamplingunits,calculationofthenumberofsamplingunitsrequiredtoachieveapreselectedprecisionandconfidencelevelor,alternatively,forcalculatingtheconfidencelimitsforthemeanbasedonthevariabilityofthesampletested.Note18212;ThispracticefordevisingasamplingplanisintendedforuseinconnectionwithTestMethodD1576orTestMethodD2462.ThesamplingofrawwoolforthedeterminationofcleanwoolfiberpresentiscoveredinPracticeD1060.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W20
【国际标准分类号】:59_060_10
【页数】:5P.;A4
【正文语种】:英语
【原文标准名称】:测定羊毛水分的取样的标准实施规程
【标准号】:ASTMD2525-1990(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1990
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D13.13
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:moisturecontent;sampling;statistics;wool;Moistureanalysis--textilefabrics/fibers;Samplingtextiles;Woolandwooltop--moisturecontent;Woolandwooltop--sampling
【摘要】:ThisrecommendedpracticefurnishesdirectionsforthesamplingofwoolofthevariousformsindicatedinSection1,inorderthatcorrectprobabilitystatementsmaybemadeabouttherelationshipbetweenthesamplemeanandthepopulationmean.Ifthesestatementsaretobecorrect,certainconditions,whicharestated,musthold.Thisrecommendedpracticerequiresthatadeliberateactofrandomizationbeperformedsothatallpotentialsamplingunitshaveapproximatelythesamechanceofbeingtakenandnosamplingunitisdeprivedofitschanceofbeingtaken.Inanycasewhereinsufficientinformationaboutthevariabilityofthesamplingunitswithinthelotisavailable,directionsaregivenforcalculatingconfidencelimitsforthesamplemeansothatacorrectprobabilitystatementcanstillbemade.1.1Thispracticecoversthedesignofasamplingplantobeusedtoobtainsamplesforthedeterminationofthemoisturecontentofgreasewool,scouredwool,cardedwool,garnettedwool,wooltopandintermediateproducts,androvings.1.2Directionsaregivenforthedesignationofsamplingunits,calculationofthenumberofsamplingunitsrequiredtoachieveapreselectedprecisionandconfidencelevelor,alternatively,forcalculatingtheconfidencelimitsforthemeanbasedonthevariabilityofthesampletested.Note18212;ThispracticefordevisingasamplingplanisintendedforuseinconnectionwithTestMethodD1576orTestMethodD2462.ThesamplingofrawwoolforthedeterminationofcleanwoolfiberpresentiscoveredinPracticeD1060.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W20
【国际标准分类号】:59_060_10
【页数】:5P.;A4
【正文语种】:英语
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