SAE AS5193 Fitting, Cross, Internal Straight Thread Port
作者:标准资料网 时间:2024-05-19 10:02:32 浏览:8911
来源:标准资料网
Product Code:SAE AS5193
Title:Fitting, Cross, Internal Straight Thread Port
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:No scope available.
【英文标准名称】:Oilofpalmarosa[Cymbopogonmartinii(Roxburgh)W.Watsonvar.motia]
【原文标准名称】:玫瑰草精油[摩提亚玫瑰草Cymbopogonmartinii(Roxburgh)W.Watsonvar.motia]
【标准号】:ISO4727-1988
【标准状态】:现行
【国别】:国际
【发布日期】:1988-05
【实施或试行日期】:1988-05-15
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC54
【标准类型】:()
【标准水平】:()
【中文主题词】:特性;定义;香精油;掌玫油;掌玫;质量;规范;试验
【英文主题词】:Characteristics;Definitions;Essentialoils;Oilofpalmarosa;Palmarosa;Quality;Specifications;Testing
【摘要】:TheStandardspecifiesthefollowingcharacteristicsoftheoil.Appearance:Clear,mobileliquid.Colour:Paleyellow.Odour:Characteristicroselike,withgrassynote.Relativedensityat20/20鳦:0,880-0,894.Refractiveindexat20鳦:1,4710-1,4780.Opticalrotationat20鳦:Rangefrom-1,4to+3.Miscibilitywith70%(V/V)ethanolat20鳦:1:2.Acidvalue:Maximum1,0.Furtheronpermissiblevaluesforestervalue,freealcoholscontentandestervalueafteracetylationaregiven.Twotypicalchromatogramsareshown.
【中国标准分类号】:Y41
【国际标准分类号】:71_100_60
【页数】:7P.;A4
【正文语种】:英语
【英文标准名称】:PracticeforEvaluatingthePerformanceofDiffusiveSamplers
【原文标准名称】:扩散采样器性能评价惯例
【标准号】:ANSI/ASTMD6246-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:determinationofcontent;evaluations;healthprotection;collectors;occupationalsafety
【摘要】:Thispracticecoverstheevaluationoftheperformanceofdiffusivesamplersofgasesandvaporsforuseoversamplingperiodsfrom4to12h.Samplingperiodsofsuchdurationarethemostcommoninworkplacesampling.Givenasuitableexposurechamber,thepracticecanbestraightforwardlyextendedtocoversamplersforuseoverothersamplingperiodsaswell.Theaimistoprovideaconcisesetofexperimentsforclassifyingsamplersprimarilyaccordingtoasinglenumericalvaluerepresentingsampleraccuracy.Accuracyestimatesrefertoconditionsofsamplerusewhicharenormallyexpectedinaworkplacesetting.Theseconditionsmaybecharacterizedbythetemperature,atmosphericpressure,humidity,andambientwindspeed,noneofwhichmaybeconstantoraccuratelyknown.Futhermore,theaccuracyaccountsfortheestimationoftime-weighedaveragesofconcentrationswhichmaynotbeconstantintime.Asidefromaccuracy,thesamplersaretestedforcompliancewiththemanufacturersstatedlimitsoncapacity,possiblyinthepresenceofinterferingcompounds.Thesamplersare,further,classifiedastotheircapabilityfordetectingsituationsinwhichsamplercapacitymaybeexceeded.Thispracticeisanextensionofpreviousresearchondiffusivesamplers(1-13)aswellasPracticesD4597,D4598,D4599,andMDHS27.Anessentialadvancehereistheestimationofsampleraccuracyunderactualconditionsofuse.Furthermore,costsofsamplerevaluationarereduced.Furtheringthelatterpoint,knowledgeofsimilaritybetweenanalytesofinterestcanbeusedtoexpeditesamplerevaluation.Forexample,interpolationofdatacharacterizingthesamplingofanalytesatseparatedpointsofahomologousseriesofcompoundsisrecommended.Atpresenttheprocedureof(9)issuggested.Followingevaluationofasamplerinuseatasinglehomologousseriesmemberaccordingtothepresentpractice,highermolecularweightmemberswouldreceivepartialvalidationsconsideringsamplingrate,capacity,analyticalrecovery,andinterferences.UnitsoftheInternationalSystem(SI)areusedthroughoutthisguideandshouldberegardedasstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30
【页数】:
【正文语种】:英语
