MIL-PRF-122A

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MIL-PRF-122A, PERFORMANCE SPECIFICATION, RESISTORS, FIXED, PRECISION, ESTABLISHED RELIABILITY, GENERAL SPECIFICATION FOR (19 FEB 1990) [SUPERSEDING MIL-R-122] [S/S BY DSCC DWGS 97009, 97010 AND 97011]., This specification covers the general requirements for hermetically sealed, high precision, low reactance, fixed, resistors that possess a high degree of stability with respect to time under severe life failure rates ranging from 1 percent to 0.001 percent per 1,000 hours (see 1.2.1.2). These failure rates are established at 60percent confidence on the basis of life tests.

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【英文标准名称】:Metalliccoatings.Hotdipgalvanizedcoatingsonferrousmaterials.Gravimetricdeterminationofthemassperunitarea.
【原文标准名称】:金属镀层.铁类材料的热浸镀锌层.用重量测定法测定单位面积重量
【标准号】:NFA91-123-1995
【标准状态】:现行
【国别】:法国
【发布日期】:1995-04-01
【实施或试行日期】:1995-04-05
【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】:覆层;质量(物质);防腐蚀;通用库存材料;金属覆层;黑色金属;含量测定;试验;材料试验;热浸镀锌;重量分析;测定;铁;材料
【英文主题词】:Coatings;Corrosionprotection;Determination;Determinationofcontent;Ferrousmetals;Gravimetricanalysis;GSMsubstances;Hot-dipgalvanizing;Iron;Mass;Materialstesting;Metalcoatings;Substance;Testing
【摘要】:
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:6P;A4
【正文语种】:其他


【英文标准名称】:StandardTestMethodforPermeabilityofThermoplasticContainerstoPackagedReagentsorProprietaryProducts
【原文标准名称】:包装试剂或专有产品对热塑塑料容器的渗透性的标准试验方法
【标准号】:ASTMD2684-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D20.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:containers;permeability;plasticbottles;Exposuretests--plastics;Permeability;Plasticbottles;Reagents;Thermoplasticcontainers
【摘要】:Withtheproperprecautionsandbackgroundexperience,resultscanbeusefulforestimationofthelossofapackagedproductthroughthewallsofacontainerduringshelfstorage.Thetestisalsousefulforisolatingtheeffectsofacontainerdesignandmaterials,andisapplicablefordevelopmentandresearchandforspecificationpurposes.Intheabsenceofadequatesupportingdata,extrapolationsorcorrelationsofresultstoconditionsbeyondthoseofthetestarenotrecommendedbecauseofpossibleproductalteration,solvency,orchemicaleffectsontheplastic,etc.Beforeproceedingwiththistestmethod,refertothespecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,orcombinationthereof,coveredinthematerialsspecificationshalltakeprecedenceoverthosementionedinthistestmethod.Iftherearenomaterialspecifications,thenthedefaultconditionsapply.1.1Thistestmethodcoversproceduresfordeterminingthepermeabilityofthermoplasticcontainerstopackagedreagentsorproprietaryproductsunderspecifiedconditionsofexposure.Theexposuresusedareintendedtosimulatethenormalandelevatedtemperature-storageconditionsthatmightbeencounteredinend-useapplication.1.2Thistestmethodisapplicableonlytothosetypesofcontainersdesignedtoallowpositive,leakproofclosure.1.3Twoproceduresareprovided:1.3.1ProcedureAisspecifictotestingonlywithastandarddesigncontainer.Thisprocedureprovidesfordeterminationsofrateofweightloss(orgain)andforcalculationofapermeabilityfactor.1.3.2ProcedureBappliestotestsofallothercontainerdesigns.Permeabilitydatabythisprocedureareexpressedonlyintermsofrateofweightloss(orgain)fortheparticularcontainertested.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.Note18212;ThereisnoknownISOequivalenttothisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A82
【国际标准分类号】:55_040
【页数】:5P.;A4
【正文语种】:英语