【英文标准名称】:Cleanroomsandassociatedcontrolledenvironments-Part1:Classificationofaircleanliness
【原文标准名称】:洁净室和相关控制环境第1部分:空气洁净度分级
【标准号】:ISO14644-1-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-05
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC209
【标准类型】:()
【标准水平】:()
【中文主题词】:微粒的数量;无菌室技术;微粒的聚集;空气纯度;气载粉尘;空气污染;浓缩;等级;空气质量;无菌室;分类系统;定义
【英文主题词】:Airpollution;Airpurity;Airquality;Airbornedust;Amount;Categoriesofpurity;Classes;Classification;Classificationsystems;Cleanrooms;Cleanliness;Clean-roomtechnology;Concentration;Concentrationofparticles;Consistency;Definitions;Degreeofpurity;Determinationofcontent;Documentations;Exteriorareas;Impurities;Lightscattermeasurement;Mathematicalcalculations;Methods;Numberofparticles;Particleanalysis;Particlesize;Particlesizedistribution;Particles;Particulateairpollutants;Pure;Pureair;Puritycriterion;Puritytest;Testing
【摘要】:ThispartofISO14644coverstheclassificationofaircleanli-nessincleanroomsandassociatedcontrolledenvironmentsexclusivelyintermsofconcentrationofairborneparticles.Onlyparticlepopulationshavingcumulativedistributionsbasedonthreshold(lowerlimit)sizesrangingfrom0,1μmto5μmareconsideredforclassificationpurposes.ThispartofISO14644doesnotprovideforclassificationofparticlepopulationsthatareoutsideofthespecifiedparticlesizerange,0,1μmto5μm.Concentrationsofultrafineparticles(particlessmallerthan0,1μm)andmacroparticles(particleslargerthan5μm)maybeusedtoquantifythesepopulationsintermsofUdescriptorsandMdescriptors,respectively.ThispartofISO14644cannotbeusedtocharacterizethephysical,chemical,radiological,orviablenatureofairborneparticles.NOTETheactualdistributionofparticleconcentrationswithinincre-mentalsizerangesnormallyisnotpredictableandtypicallyisvariableovertime.
【中国标准分类号】:C04
【国际标准分类号】:13_040_35
【页数】:18P;A4
【正文语种】:英语