【英文标准名称】:StandardTestMethodforDeterminationofButaneActivityofActivatedCarbon
【原文标准名称】:活性碳丁烷活性测定的标准试验方法
【标准号】:ASTMD5742-1995(2005)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:D28.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验方法;丁烷;化学试剂;活性碳
【英文主题词】:activatedcarbon
【摘要】:Thebutaneactivityasdeterminedbythistestmethodisameasureoftheabilityofanactivatedcarbontoadsorbbutanefromdryairunderspecifiedconditions.Itisusefulforthequalitycontrolandevaluationofgranularactivatedcarbons.Thebutaneactivityisanindicationofthemicroporevolumeoftheactivatedcarbonsample.Thisactivitynumberdoesnotnecessarilyprovideanabsoluteorrelativemeasureoftheeffectivenessofthetestedcarbonforotheradsorbatesoratotherconditionsofoperation.Thebutaneactivitytestcanbeusedasanon-ozonedepletingsubstituteforthecarbontetrachlorideactivitytestinTestMethodD3467.Fig.1showsanexperimentalcorrelationofactivityvaluesobtainedusingthetwoadsorbates.Note18212;Thistesthasnotbeendesignedforusewithpowderedactivatedcarbon,butithasbeenusedsuccessfullywhentheflowrateortimeareadjustedorthesamplevolumeisdecreasedtokeepthepressuredropatanacceptablevalue.FIG.1ButaneVersusCarbonTetrachlorideCorrelation1.1Thistestmethodcoversdeterminationoftheactivationlevelofactivatedcarbon.Butaneactivity(BA)isdefinedhereinastheratio(inpercent)ofthemassofbutaneadsorbedbyanactivatedcarbonsampletothemassofthesample,whenthecarbonissaturatedwithbutaneundertheconditionslistedinthistestmethod.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Foraspecificwarningstatement,see7.1.
【中国标准分类号】:G63
【国际标准分类号】:71_040_30
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:Communicationcables-Specificationsfortestmethods-Part1-7:electricaltestmethods-Velocityofpropagation.
【原文标准名称】:通信电缆.试验方法规范.第1-7部分:电气试验方法.传播速度
【标准号】:NFC93-537-1-7-2001
【标准状态】:现行
【国别】:法国
【发布日期】:2001-09-01
【实施或试行日期】:2001-09-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:模拟;速度;;电气试验;电气工程;作标记;远程通信;规范;电缆;测量技术;电缆;定义;定义;分散;试验;模拟信号;电信;通信电缆;数字信号;数字的;通信
【英文主题词】:
【摘要】:
【中国标准分类号】:L13
【国际标准分类号】:33_120_10
【页数】:11P;A4
【正文语种】:其他