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Three common face mask protection standards

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Three common face mask protection standards

Author: Date :2021-04-06 Views: order
1. European PPF standard:
Test substance: Sodium chloride aerosol and paraffin oil Particle size: 0.3μm Test air flow rate: 95L/Min
Three common face mask protection standards(图1)

2. American NiosH standard:
Test substance: Sodium chloride aerosol and paraffin oil Particle size: 0.3μm Test air flow rate: 85L/Min
Three common face mask protection standards(图2)

(N is only for non-oily particles, R and P are for oily and non-oily particles, but P has a longer service life than R)

3. China GB2626-2006 standard:
Test substance: Sodium chloride aerosol and paraffin oil Particle size: 0.02-2μm Test air flow: 85L/Min
Test substance: Sodium chloride aerosol and paraffin oil Particle size: 0.02-2μm Test air flow: 85L/Min
Test substance: Sodium chloride aerosol and paraffin oil Particle size: 85L/Min
Three common face mask protection standards(图3)
Sodium chloride aerosol represents non-oily particles, paraffin oil represents oily particles, and the impedance value represents the degree of obstruction of the mask to breathing when the mask is used. The larger the value, the more obstructed the breathing, and the two have different comfort levels. The particle diameter used in these test standards is less than 2.5 microns, so it can be regarded as the protection against PM2.5) Typical oily particles: kitchen oil fume, diesel engine exhaust, gasoline engine exhaust, asphalt smoke Typical non-oily particles: cement dust.

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