Tag - Clean room

Clean Room Classification and Filter Grade

Clean Room Classification Correlation between particle size efficiency, Eurovent 4/5,EN779 and ASHRAE 52.1 and 52.2 Ratings Eurovent 4/5 EU3 EU4 EU5 EU6 EU7 EU8 EU9 EN 779 G3 G4 F5 F6 F7 F8 F9 Arrestance 60 to 80% 80 to 90% 90 to 95% 95 to 98% >98% >98% >98% Dust spot efficiency < 20% 20 to 35% 40 to 55% 60 to 80% 80 to 90% 90 to 95% >95% MERV 5,6 7,8 9,10 11,12 13 14 15 % Min. PSE @ 10 micron 90 98 100 100 100 100 100 % Min. PSE @ 5 micron 75 80 95 98 100 100 100 % Min. PSE @ 3 micron NA NA 85 90 95 98 100 % Min. PSE @ 1 micron NA NA 55 70 85 90 95 % Min. PSE @ 0.5 micron NA NA 35 50 65 75 85 % Min. PSE @ 0.3 micron NA NA 20 40 50 60 70 Rating Comparison for HEPA and ULPA Filters EN 1822 FILTER CLASS % MPPS EFFICIENCY EFFICIENCY [...]

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