EN1822-1:2009isaEuropeanstandardthatspecifiestheclassificationandtestingrequirementsforhighefficiencyparticulateair(HEPA)filtersusedinventilationsystems.Thestandarddefinesthreefilterclasses(EPA,HEPA,andULPA)basedontheirparticlecollectionefficiencyatthemostpenetratingparticlesize(MPPS).Toaddadescriptiveparagraph:ThestandardEN1822-1:2009establishesauniformtestingandclassificationsystemforhigh-efficiencyairfilters,ensuringconsistentperformanceevaluationacrossmanufacturers.Itincludesdetailedproceduresfordeterminingfilterefficiency,pressuredrop,andleakagetestingundercontrolledconditions.Theclassificationsystem(EPA,HEPA,ULPA)isbasedonthefilter'sabilitytocaptureparticlesatthemostpenetratingsize(typically0.1–0.3µm),whichrepresentstheworst-casescenarioforfiltrationefficiency.Compliancewiththisstandardisessentialforapplicationsrequiringstrictaircleanliness,suchaspharmaceuticalproduction,semiconductormanufacturing,andhealthcarefacilities.Thestandardalsoprovidesguidanceonqualityassurancemeasurestomaintainfilterintegrityduringproductionandinstallation.Letmeknowifyouneedfurthermodificationsoradditionaldetails.
