European standard classification for air purification and filtration equipment

I. Coarse efficiency filters are divided into four levels

G1 efficiency: for particle size ≥ 5.0μm, filtration efficiency E≥20% (corresponding to the American standard C1).

G2 efficiency: for particle size ≥ 5.0μm, filtration efficiency 50>E≥20% (corresponding to the American standard C2--C4).

G3 efficiency: for particle size ≥ 5.0μm, filtration efficiency 70>E≥50% (corresponds to American Standard L5).

G4 efficiency: for particle size ≥ 5.0μm, filtration efficiency 90>E≥70% (corresponding to the American standard L6).

 

II. Medium efficiency filters are divided into two levels

F5 efficiency: for particle size ≥ 1.0μm, filtration efficiency 50>E≥30% (corresponding to the American standard M9, M10).

F6 efficiency: for particle size ≥ 1.0μm, filtration efficiency 80>E≥50% (corresponding to the American standard M11, M12).

III. High and medium-efficiency filters are divided into three levels

F7 efficiency: for particle size ≥ 1.0μm, filtration efficiency 99>E≥70% (corresponding to the American standard H13).

F8 efficiency: for particle size ≥ 0.5μm, filtration efficiency 90>E≥75% (corresponding to the American standard H14).

F9 efficiency: for particle size ≥ 0.5μm, filtration efficiency 99>E≥90% (corresponding to the American standard H15).

 

IV. Sub-high efficiency filters are divided into two levels

H10 efficiency: for particle size ≥ 0.5μm, the filtration efficiency 99>E≥95% (corresponding to the American standard H15).

H11 efficiency: for particle size ≥ 0.5μm, filtration efficiency 99.9>E≥99% (corresponding to the American standard H16).

 

V. High-efficiency filters are divided into two levels

H13 efficiency: for particle size ≥ 0.5μm, filtration efficiency E≥99.9% (corresponding to the American standard H16).

H14 efficiency: for particle size ≥ 0.5μm, filtration efficiency E≥99.99% (corresponding to American standard H17).