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 4/5EU3EU4EU5EU6EU7EU8EU9
EN 779G3G4F5F6F7F8F9
Arrestance60 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%
MERV5,67,89,1011,12131415
% Min. PSE @ 10 micron9098100100100100100
% Min. PSE @ 5 micron75809598100100100
% Min. PSE @ 3 micronNANA85909598100
% Min. PSE @ 1 micronNANA5570859095
% Min. PSE @ 0.5 micronNANA3550657585
% Min. PSE @ 0.3 micronNANA2040506070

Rating Comparison for HEPA and ULPA Filters

EN 1822 FILTER CLASS% MPPS EFFICIENCYEFFICIENCY AS PER IEST-RP-CC-034.1
H 108595% @ 0.3 microns
H 119599.9% @ 0.3 microns
H 1299.599.97% @ 0.3 microns
H 1399.9599.99% @ 0.3 microns
H 1499.99599.999% @ 0.3 microns
U 1599.999599.9975% @ 0.12 microns
U 1699.9999599.99975% @ 0.12 microns
U 1799.99999599.999975% @ 0.12 microns

Share this post


Online Service
Live Chat