SAE AS9788 Bolt, Machine - Hexagon Head, Full Shank, Ams 5643, .500-20 Unjf-3a
作者:标准资料网 时间:2024-05-06 09:59:09 浏览:9710
来源:标准资料网
Product Code:SAE AS9788
Title:Bolt, Machine - Hexagon Head, Full Shank, Ams 5643, .500-20 Unjf-3a
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:No scope available.
【英文标准名称】:StandardGuideforConductingRenewalMicroplate-BasedLife-CycleToxicityTestswithaMarineMeiobenthicCopepod
【原文标准名称】:用海洋Meiobenthic桡足类甲壳动物进行复原的基于微板的寿命周期毒性试验的标准指南
【标准号】:ASTME2317-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E47.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:microplate-based;life-cycle;toxicitytests;marine;meiobenthic;copepod
【摘要】:1.1Thisguidedescribesproceduresforobtaininglaboratorydataconcerningtheadverseeffectsofatestmaterialaddedtoseawater,butnottofood,onthemarinecopepodAmphiascustenuiremis,duringcontinuousexposuresofindividuals,fromimmediatelyafterbirth,untilafterthebeginningofreproductionusinga200956;Lrenewalmicroplate-culturingtechnique.Thefollowingdataarecheckedandrecordedduringthetestperiod:stage-specificsurvival,numberofdaysittakesfordevelopmentfromafirststagenaupliustoareproductivelymaturecopepod,genderratios,numberofdaysforafemaletoextrudefirstandsubsequentbroods,numberofdaysbetweenfirst(andsubsequent)broodextrusion(s)andhatchingoffirst-generationnauplii,numberofhatchedandsurvivingnauplii,numberofunhatchedornecroticeggsandabortedunhatchingeggsacs,andthetotalnumberoffemalesabletoproduceviableoffspringovertheentirematingperiod.Thismicroplate-basedfulllife-cycletoxicitytesthasadurationofapproximately17daysfortoxicantsthatdonotdelaydevelopment.Theseproceduresprobablywillbeusefulforconductinglife-cycletoxicitytestswithotherspeciesofcopepods,althoughmodificationsmightbenecessary.1.2Theseproceduresareapplicabletomostchemicals,eitherindividually,orinformulations,commercialproducts,orknownmixtures,thatcanbemeasuredaccuratelyatthenecessaryconcentrationinwater.Withappropriatemodificationstheseprocedurescanbeusedtoconducttestsontemperature,dissolvedoxygen,andpHandonsuchmaterialsasaqueouseffluents(seealsoGuideE1192),sedimentporewaters,andsurfacewaters.Renewalmicroplatetestsmightnotbeapplicabletomaterialsthathaveahighoxygendemand,arehighlyvolatile,arerapidlytransformed(biologicallyorchemically)inaqueoussolutions,orareremovedfromtestsolutionsinsubstantialquantitiesbythetestchambersororganismsduringthetest.Iftheconcentrationofdissolvedoxygenfallsbelow50%ofsaturation,ortheconcentrationoftestmaterialinthetestsolutiondecreasesbymorethan20%betweenrenewals,itmightbedesirabletorenewthesolutionsmoreoften.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatoryrequirementspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:07_100_99
【页数】:16P.;A4
【正文语种】:
【英文标准名称】:Specificationforprinciplesofdesignandconstructionofvolumetricglasswareforlaboratoryuse
【原文标准名称】:实验室用容量玻璃器皿的设计及制作原理规范
【标准号】:BS5898-1980
【标准状态】:现行
【国别】:英国
【发布日期】:1980-02-29
【实施或试行日期】:1980-02-29
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:容积测量;作标记;图解法;划刻度;容量瓶;量筒;误差;实验室玻璃器皿;准确度;尺寸;精密度
【英文主题词】:
【摘要】:Setsoutrequirementsforvolumetricitemsoflaboratoryglasswaresuchasunitofvolume,referencetemperature,accuracy,verification,materialsofconstruction,lineardimensions,graduationlines,scales,figuringandinscriptions.
【中国标准分类号】:N64
【国际标准分类号】:71_040_20
【页数】:16P;A4
【正文语种】:英语
