Publish Time: 2021-12-18 Origin: Site
National Standards for Air Filtration Grade Division
| United States Efficiency Specification | ||||||
| Specification | Particle Efficiency(%) | Arrestance(%) | TEST | |||
| Arrestance | The End Resistance(Pa) | |||||
| Final Resist | ||||||
| 0.3～1.0μm | 1.0～3.0μm | 3.0～10.0μm | ||||
| MERV1 | E3<20 | Aavg＜65 | 75 | E1 is 0.30-0.40,0.40-0.55,0.55-0.70,0.70-1.0μm four particle size interval of the whole process of the test the lowest average; E2 is 1.0 to 1.3, 1.3-1.6, 1.6-2.2, 2.2 to 3.0 mu m four the minimum average particle size range; E3 is 4.0 to 4.0, 4.0-5.5, 5.5-7.0, 7.0 to 10.0 mu m four lowest average particle size range | ||
| MERV2 | E3<20 | 65≤Aavg＜70 | 75 | |||
| MERV3 | E3<20 | 70≤Aavg＜75 | 75 | |||
| MERV4 | E3<20 | 70≤Aavg | 75 | |||
| MERV5 | 20≤E3＜35 | 150 | ||||
| MERV6 | 35≤E3＜50 | 150 | ||||
| MERV7 | 50≤E3＜70 | 150 | ||||
| MERV8 | 70≤E3＜80 | 150 | ||||
| MERV9 | E2＜50 | 85≤E3 | 250 | |||
| MERV10 | 50≤E2＜65 | 85≤E3 | 250 | |||
| MERV11 | 65≤E2＜80 | 85≤E3 | 250 | |||
| MERV12 | 80≤E2＜90 | 90≤E3 | 250 | |||
| MERV13 | E1＜75 | 90≤E2 | 90≤E3 | 350 | ||
| MERV14 | 75≤E1＜75 | 90≤E2 | 90≤E3 | 350 | ||
| MERV15 | 85≤E1＜95 | 90≤E2 | 90≤E3 | 350 | ||
| MERV16 | 95≤E1 | 95≤E2 | 95≤E3 | 350 | ||
| MERV17 | ≥99.97% IEST-Class A | |||||
| MERV18 | For 0.3 μm Particle ≥99.99% IEST-Class C HEPA Filter | |||||
| MERV19 | ≥99.999% IEST-Class D | |||||
| MERV20 | For 0.1~0.2μm Particle, Scanning Method≥99.999% IEST-Class F UEPA Filter | |||||
| Current Classification in Europe | |||
| Standard | EN779:1993 | EN1882-1:1998 | |
| Specification | Proportion Method(%) | Colorimetric or Counting Methods(%) | Most Permeable Particle Size Method(%) |
| Arrestance | Dust-spot | MPPS | |
| Or Particle Efficiency | |||
| G1 | E<65 | ||
| G2 | 65≤E<80 | ||
| G3 | 80≤E<90 | ||
| G4 | 90≤E | ||
| F5 | 40≤E<60 | ||
| F6 | 60≤E<80 | ||
| F7 | 80≤E<90 | ||
| F8 | 90≤E<95 | ||
| F9 | 95≤E | ||
| H10 | 85≤E＜95 | ||
| H11 | 95≤E＜99.5 | ||
| H12 | 99.5≤E＜99.95 | ||
| H13 | 99.95≤E＜99.995 | ||
| H14 | 99.995≤E＜99.9995 | ||
| U15 | 99.9995≤E＜99.99995 | ||
| U16 | 99.99995≤E＜99.999995 | ||
| U17 | 99.999995≤E | ||
| Classification of air filtration (GB) | |||||
| GB12218-89 Classification | I | Ⅱ | Ⅲ | Ⅳ | Ⅴ |
| Partical Size（μm) | ≥5.0 | ≥1.0 | ≥0.5 | ||
| Counting Efficiency( %） | <40 | 40<E<80 | 40<E<80 | 70<E<99 | 95<E<99.9 |
| GB/T14295-93 Classification | Coarse Effect | Intermediate-acting | High Efficiency | Sub HEPA | |
| Particle Size (μm) | ≥5.0 | ≥1.0 | ≥0.5 | ||
| Counting Efficiency(%) | 20<E<80 | 20<E<70 | 70<E<99 | 95<E<99.9 | |
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