YD/T 678-1994 电子式电传打字机质量分等标准

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基本信息
标准名称:电子式电传打字机质量分等标准
中标分类: 通信、广播 >> 通信设备 >> 传真电报设备
发布部门:中华人民共和国邮电部
发布日期:1994-05-18
实施日期:1994-05-18
首发日期:1900-01-01
作废日期:2009-12-01
提出单位:中华人民共和国邮电部
归口单位:邮电部邮电工业标准化研究所
起草单位:邮电部上海通信设备厂
出版社:人民邮电出版社
出版日期:1994-05-18
页数:6页
适用范围

本标准规定了电子式电传打字机的质量等级和质量分等要求。
本标准适用于电子式电传打字机,是评定电子式电传机产品质量等级的依据。本标准不适用于产品质量分等。

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所属分类: 通信 广播 通信设备 传真电报设备
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【英文标准名称】:StandardTestMethodforSyntheticAnionicActiveIngredientinDetergentsbyCationicTitrationProcedure
【原文标准名称】:用阳离子滴定程序对洗涤剂中合成阴离子活性成分的标准试验方法
【标准号】:ASTMD1681-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D12.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;肥皂;活性物质;洗涤剂;抛光剂
【英文主题词】:
【摘要】:Thistestmethoddeterminesanionicdetergentscommonlyfoundinlaundry,dishwashing,andothercleaningmaterials.Accuratedeterminationoftheanionicactivesubstanceishighlyimportantinassessingthecostandeffectivenessofsuchcleaningsubstances.1.1Directtitrationofananionicsurfactantwithastandardizedcationicreagentisasimpleandconvenientmethodforthequantitativedeterminationofthecontentofactiveingredient.Theendpointisdetffectedbythetransferofacoloredcomplexfromanorganicsolventphasetoanaqueousphase.Therelationshipbetweenanionicandcationicagentsisnotalwaysstoichiometric,andformaximumaccuracytheanionictypeofinterestshouldfirstbecharacterizedandthenusedtostandardizethecationicreagent.Inmostcases,however,thedifferentanionicsurfactantslikelytobeencounteredreactinthesameproportions.Thatis,acationictitratingsolutionstandardizedagainstacharacterizedanionicagentcanbeusedtoanalyzeotheranionicsofknownmolecularweights.1.2Thistestmethodisapplicabletoalkylarylsulfonatesandfattyalkylsulfates.Lowresultsareobtainedwithalkylbenzenesulfonateshavingthealkylchainlengthlessthaneightcarbonatoms.Lowresultsarealsoobtainedforalkylsulfateswiththealkylchainlengthoflessthantwelvecarbonatoms.TheanionicsurfactantscharacterizedinaccordancewithSectionsshouldbethesodiumsaltandnotamine,ammonium,orpotassiumsalts.Incaseonlyamineorammoniumsaltsareavailable,theyshouldbefirstconvertedtothesodiumsaltbeforeproceedingwiththisanalysis.1.3Theanalyticalproceduresappearinthefollowingorder:SectionsSeparationofAlcohol-SolubleMatter8and9SeparationofOil-FreeSulfonate10and11DeterminationofSodiumChloride(NaCl)Content12-17CharacterizationofAnionicSurfactantStandard:PartI.DeterminationofSurfactant,SO3Content,andSolutionMolarity18-20PartII.DeterminationofSurfactant,SO3andActiveIngredientContentsCombiningWeight,andSolutionMolarity21-24StandardizationofCationicReagent25-29QuantitativeDeterminationofAnionicSurfactantbyCationicTitration30-33【英文标准名称】:StandardSpecificationforPolycarbonate(PC)UnfilledandReinforcedMaterial
【原文标准名称】:未填充的和增强的聚碳酸酯材料标准规范
【标准号】:ASTMD3935-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:D20.15
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:塑料;聚碳酸酯
【英文主题词】:line-calloutspecification;plast;polycarbonateresins;recycledplast;specification;NumberCode83.080.20(Thermoplasticmaterials);83.120(Reinforcedplast)
【摘要】:1.1Thisspecificationcoversunfilledandreinforcedpolycarbonateandpolycarbonatecopolymermaterialssuitableforinjectionmolding,blowmolding,andextrusion.Someofthesecompositionsmayalsofinduseforcompressionmoldingorapplicationfromsolution.1.2Thepropertiesinthisspecificationarethoserequiredforidentifyingthecompositionscovered.Theremaybeotherrequirementsnecessaryforidentifyingparticularcharacteristicsimportanttospecificapplications.ThosemaybespecifiedbyusingthesuffixesinaccordancewithSection5.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Note18212;ThisspecificationissimilartoISO7391-1987intitleonly.Thetechnicalcontentissignificantlydifferent.1.4Thefollowinghazardscaveatpertainsonlytothetestmethodsportion,Section12,ofthisspecification.Thisstandarddoesnotpurporttoaddressallsafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityorregulatorylimitationspriortouse.
【中国标准分类号】:G32
【国际标准分类号】:83_080_20;83_120
【页数】:7P.;A4
【正文语种】: