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【英文标准名称】:StandardTestMethodforEfficacyofMicrobicidesUsedinCoolingWaterSystems
【原文标准名称】:冷却水系统用杀菌剂效力的标准试验方法
【标准号】:ASTME645-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E35.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:冷却系统;危险物质;杀虫剂;污染控制;制冷装置;测试
【英文主题词】:algae;algicide;bacteria;bactericide;biofilm;coolingtower;coolingtowerwater;deposits/lime;efficacy;fungi;fungicide;microbialbiofouling;microbicide
【摘要】:Thistestmethoddeterminespotentiallyeffectivemicrobicidesforuseincoolingwatersystemsusingcoolingwateranddeposits/biofilmobtainedfromthefield.Theadditionofdeposits/biofilmsaddressestheneedtoincludethemajorsourceofmicroorganismsincoolingwatersystems.Evenwiththisaddition,laboratoryresultsmaynotbetotallypredictiveofmicrobicidaleffectivenessinthefield.Thisisbecauseconditionsinthefieldaffectingmicrobicideeffectivenessaredifficulttomimicinthelaboratory.Theseincludeblowdownrate,additionofmakeupwater,waterhardness,hydrocarbonleaks,pH,sedimentloading,dissolvedsolids,microbesinslime,anddeposits(biofilms)onsurfaces.Anadditionalfactoristhedifficultyinenumeratingallmicrobesinthewaterduetothelackofadequaterecoverymedia.Guidelinesthataddressformationofandtestingforsurface-attachedmicrobes(biofilms)maybefoundinGuidesE1427,whileaguidelineforunconventionalmeasurementofmicrobesisfoundinGuideE1326.1.1Thistestmethodoutlinesaprocedureforevaluatingtheefficacyofmicrobicides(algicides,bactericides,andfungicides)thatwillbeusedforcontrollingmicrobialgrowthincoolingwatersystems.Themicrobicideswillbeevaluatedusingsimulatedorrealcoolingtowerwateragainst(1)microbesfromcoolingwater,(2)microbesinmicrobiologicaldeposits(biofilms)fromoperatingcoolingsystems,or(3)microorganismsknowntocontaminatecoolingwatersystems,oracombinationthereof.Thistestmethodshouldbeperformedbyindividualsfamiliarwithmicrobiologicaltechniques.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G25
【国际标准分类号】:65_100_99
【页数】:5P.;A4
【正文语种】: