Dust types

Which filter class filters which particles and which dirt from the air? Here you will find an overview of the different types of dirt that can be found in the filters.

Dust types	Particle size (frequently / µm)	Filter classes according to ISO 16890 min >= as	Demand
Ash	2 - 100	coarse 60%	N
		ePM1 50%	H
Car exhaust fumes	0,3 - 2	ePM1 50%	N
		ePM1 80%	H
Building dust	5 - 150	ePM10 50%	N
Pollen	5 - 100	ePM10 50%	N
		ePM1 50%	H
Brake dust	0,3 - 10	ePM1 80%	N
Office dust	2 - 100	Coarse 60%	N
		ePM1 50%	H
Fly ash	2 - 150	Coarse 60%	N
		ePM1 50%	H
Fibreglass dust	0,3 - 20	ePM1 80%	N
Industrial dust	2 - 150	Coarse 60%	N
		ePM1 50%	H
Insects	>500	Coarse 60%	N
Germs	0,5 - 10	ePM1 80%	N
		ePM1 95%	H
Pulverized coal	0,5 - 100	ePM1 50%	N
		ePM1 80%	H
Dust (land areas)	3 - 100	Coarse 60%	N
		ePM1 50%	H
Dust (urban areas)	0,5 - 100	ePM1 50%	N
		ePM1 80%	H
Paper dust	3 - 100	Coarse 60%	N
Pollen	5 - 100	ePM10 50%	N
		ePM1 50%	H
Smoke	0,1 - 3	ePM1 95%	N
Sahara sand	0,8 - 30	ePM1 50%	N
Spores / Pollen	5 - 100	ePM10 50%	N
Textile fibres	50 - 1000	Coarse 40%	N
Cement dust	2 - 100	ePM1 50%	N
		ePM1 80%	H

N = for normal requirements (can also be the prefilter before the higher filter stage)
H = for higher requirements

The human eye (depending on vision) can detect particles from a size of approx. 20 µm.

This information is without guarantee and serves only as an indication. Deviations due to external influences are possible.