:format(webp))
On 1 July 2018, a new filter standard came into force. EXHAUSTO retains the old item numbers, but uses the new designations in item texts, etc.
The new filter standard contributes to filter efficiency and classification that is more in line with reality as well as the same standard across the world, creating less confusion. 


Test performed with 0.3-10 μm particles
Classification is based on results for particle sizes PM1, PM2.5 and PM10
The filter is discharged of static electricity during the test
Dust load with ISO “fine dust” to find pressure loss
Filter class | Requirements | Requirements | Requirements | Test category |
ISO Coarse |
|
|
≤50% |
|
ISO ePM10 |
|
| ≥50% | ePM10 [%] |
ISO ePM2-5 |
| ≥50% |
| ePM2.5 [%] |
ISO ePM1 | ≥50% |
|
| M1 [%] |
The table below is an excerpt from the classification table. Here you can see:
which requirements in relation to starting efficiency and efficiency after discharge for each filter class
what type of filter the previous filters should/can be replaced with
PM1 classification | PM2.5 classification | PM10 classification | Grove |
ePM1 [95%] | ePM2.5 [95%] | ePM10 [95%] | Weight excretion reported in 5% steps |
Requirement: > 50% discharge efficiency | Requirement: > 50% discharge efficiency | Requirement: No discharge requirement | No discharge requirement |
New designations for the panel filters used for VEX100 – 200 – 300
Previous designation | Filter class according to ISO 16890 |
M5 | Coarse 85% |
F7 | ePM1 55% |
F9 | ePM1 80% |
The filter selection must take into account the current outdoor climate and the desired indoor climate.
According to ISO 16798, you must select the filter class according to the quality of the outdoor air (ODA) and the quality of the supply air (SUP):
Outside air quality | SUP1 (High) | SUP2 (Medium) | SUP3 (Moderate) | SUP4 (Low) PM2.5 ≤ 10 PM10 ≤ 20 | SUP5 (Very low) PM 2.5 ≤ 15 PM10 ≤ 30 |
Categorize | ePM1 | ePM1 | ePM 2.5 | ePM10 | ePM10 |
ODA 1 (Clean air)
PM2.5 ≤ 10 µg/m³ and | 60% | 50% | 60% | 60% | 50% |
ODA 2 (Dust & Gas)
PM2.5 ≤ 15 µg/m³ and | 80% | 70% | 70% | 80% | 60% |
ODA 3 (Poor)
PM2.5 ≤ 15 µg/m3 and | 90% | 80% | 80% | 90% | 80% |
EXHAUSTO therefore offers pre-filtration for VEX300T, VEX200 and VEX4000