Product Details

EN149 Particulate Filtration Efficiency Tester

1.Product Description

This machine specifies a method to test filtration performance of particulate matter of textile.This machine is applicable to air filtration fabrics, face masks and other products.

2 Principle

The aerosol with a certain particle size is produced by the aerosol generating system, and the aerosol is used as the test medium to simulate pollutants in the environment. Under specified test conditions, the aerosol passes through specimen, and the aerosol accumulates on the surface of the specimen, filtration efficiency, initial press drop, final press drop, filter time or dust-hold capacity are calculated when the dust-hold capacity or filtration resistance of the specimen reaches a certain value, so as to represent the filtration performance of the sample.

3.Technical Parameters

Filtering method	Photometer
Test medium	1% NaCL	DOP
Aerosol flow	95L/min	95L/min
Aerosol concentration	8±4 mg / m3	20±5 mg / m3
Particle size distribution	0.04um-1.00um	0.05um-1.7um
Test temperature	ambient	From 100 to 110℃
Filtration efficiency	0.001 ~ 99.999%
pressure	500Pa
Test area	100cm²
Test temperature	ambient
Relative humidity	Less than 60%
Test time	30±3sec

4. Test Standards:

EN 143-2000 EN 149-2001

EN14683-2019+AC-2019 IEST-RP-CC021.1 NIOSH 42 CFR Part 84

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