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【英文标准名称】:StandardTestMethodforDeterminingFormaldehydeConcentrationsinAirandEmissionRatesfromWoodProductsUsingaLargeChamber
【原文标准名称】:确定的试验条件下用大容器测定木制品甲醛量的测试方法
【标准号】:ASTME1333-1996(2002)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:D07.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:木制品;甲醛释出;测试方法
【英文主题词】:chromotropicacidanalysis;concentrationinair;emissionrate;formaldehyde;largechamber;woodproductscontainingformaldehyde
【摘要】:1.1Thistestmethodmeasurestheformaldehydeconcentrationinairandemissionratefromwoodproductscontainingformaldehydeunderconditionsdesignedtosimulateproductuse(see11.5andNote7).Theconcentrationinairandemissionrateisdeterminedinalargechamberunderspecifictestconditionsoftemperatureandrelativehumidity.Thegeneralproceduresarealsointendedfortestingproductcombinationsatproduct-loadingratiosandatair-exchangeratestypicaloftheindoorenvironment(1).Theproductstested,theloadingratiosandtheairexchangeratesemployedaredescribedinthetestreport.1.2Thistestmethoddeterminestheaverageformaldehydeconcentrationinairandemissionratefromanumberoflargesizesamples.Theaverageconcentrationandemissionratereported,thus,willnotprovideinformationonhigherorloweremittingpanelsinthetestlot.1.3Thismethodisprimarilyusedfortestingnewlymanufacturedpanelproductsthatareshippedfortestingeitherseal-wrappedinpolyethyleneorwithwastersheets,orwithboth.Whenthistestmethodisusedforevaluatingotherthannewlymanufacturedpanelproducts(afteroriginalapplication,installationoruse),themethodofpackagingandshippingtheproductfortestingshallbedescribedinthetestreport.1.4ThequantityofformaldehydeintheairsampletakenfromthechamberisdeterminedbyanadaptationoftheNationalInstituteforOccupationalSafetyandHealth(NIOSH)3500chromotropicacidtestprocedure.Ifanotheranalyticalprocedureisusedtodeterminethequantityofformaldehydeintheairsample,thatprocedureshallgiveresultsofequivalentorgreateraccuracyandprecisionthantheadaptedchromotropicacidprocedure.Detailedproceduresbasedonacetylacetone,pararosaniline(seeTestMethodD5221),2,4-dinitrophenylhydrazine(DNPH)(seeTestMethodD5197)and3-methyl-2-benzothiazoline(MBTH)(seeTestMethodD5014)havebeenfoundtogiveresultsequivalentorgreaterinaccuracyandprecisionthanchromotropicacid.Thetestreportshallnotetheanalyticalprocedureemployed.Note18212;Thechromotropicacidanalyticalproceduredescribedinthistestmethodisapplicablefortestingurea-formaldehydebondedwoodproducts.AccordingtoNIOSH(4thEdition,8/15/94)thelowendoftheworkingrangeforthechromotropicacidanalyticalprocedureis0.02ppm.Amoresensitiveanalyticalprocedureisrecommendedfortestingwoodpanelproductswhereformaldehydeconcentrationsinairareanticipatedtobeatorbelowthislevel.DNPHisrecognizedassuchamethod.1.5ThistestmethodisusedtodeterminecompliancewithrequirementssuchasthoseestablishedforbuildingmaterialsbytheU.S.DepartmentofHousingandUrbanDevelopmentRulesandRegulations24CFR3280formanufacturedhousingandbyMinnesotaStatutesSection144.495.Measurementresultsarealsousedforcomparingconcentrationsinairandemissionratesfromdifferentwoodproducts(2)andfordeterminingcompliancewithproductstandards.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thistestmethodisnotdesignedfordetermininggeneralorganicemissionsfromallindoormaterialsandproducts.Note28212;ASTMCommitteeD22hasdevelopedGuideD5116whichdescribessmall-scaleenvironmentalequipmentandtechniquessuitablefordeterminingorganicemissionsandemissionratesfrommaterialsandproductsusedindoors.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7.
【中国标准分类号】:B60
【国际标准分类号】:79_060_20
【页数】:12P.;A4
【正文语种】:


【英文标准名称】:MetricPlainWashers
【原文标准名称】:米制平垫圈
【标准号】:ASMEB18.22M-1981
【标准状态】:现行
【国别】:美国
【发布日期】:1981
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:普通部件;垫圈;尺寸;锁紧装置;紧固件;米制的;规范(验收)
【英文主题词】:Dimensions;Fasteners;Lockingdevices;Metric;Plainparts;Specification;Specification(approval);Washers
【摘要】:ThisStandardcoversgeneralspecificationsanddimensionsforflat,roundholewashers,bothsoft(asfabricated)andhardened,intendedforuseingeneralpurposeapplications.TheinclusionofdimensionaldatainthisStandardisnotintendedtoimplythatallsizesdisplayedareproductionstockitems.Manufacturersshouldbecontactedforcurrentinformationonstocksizes.
【中国标准分类号】:J13
【国际标准分类号】:21_060_30
【页数】:16P.;A4
【正文语种】:英语