EN17359:2020isaEuropeanstandardthatspecifiesamethodforsamplingandcollectingbioaerosolsandbiologicalagentsfromstationarysourceemissionsusinganimpactiontechnique.Thestandardfocusesontheuseofliquidimpingersforcapturingairbornebiologicalparticles,suchasbacteria,fungi,viruses,andpollen,emittedfromfixedsourceslikeindustrialstacks,ventilationsystems,oragriculturalfacilities.Keyaspectscoveredinthestandardinclude:-Principlesoftheimpactionmethod,whereairisdrawnthroughaliquidmediumtotrapbioaerosols.-Requirementsforsamplingequipment,includingtheimpingerdesign,flowrates,andcollectionliquid.-Proceduresforsamplecollection,handling,andpreservationtomaintainbiologicalintegrity.-Guidanceonminimizingcontaminationandensuringrepresentativesampling.-Considerationsforsubsequentanalysis,suchascultural,molecular,ormicroscopictechniques.Thestandardaimstoprovideastandardizedapproachformonitoringbioaerosolemissions,supportingenvironmentalandpublichealthassessments.