EU STANDARDS TEST FOR SOCIAL MASKS

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Raw Material for production of Level 3 Social Masks

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PERMEABILITY IN AIR TESTING

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Test / Standard: PERMEABILITY TO AIR / EN ISO 9237: 1995
Results
72.2
5.6
Average value (1 / (m2.s) or mm / s): 72,2
C.V. (%) 5,6
I.C. (95%) +2,8
Average air flow (l / min): 8,7

Minimum requirements:
– Bigger than or equal to 8 l / min
Note: The minimum requirement values are based on the characterization of
surgical masks certified by EN 14683: 2019 type I

Test Conditions
Number of test pieces tested – 10
Tested area – 20 cm2
Pressure used (Pa) – 40
Conditioned environment:
20 +/- 2 ° C and 65 +/- 4% H.R.

Test / Standard: * PARTICLE RETENTION ASSESSMENT / MI 142/00
Results
PRC (greater than or equal to 3 µm) (%) – 80
PRC (0.5 µm to 0.7 µm) (%) – 10

Level 3 masks for the general population:
PRC (greater than or equal to 3 µm) –
Bigger than or equal to 70%

Note: The minimum requirement values are based on the characterization of
surgical masks certified by EN 14683: 2019 type |

Test Conditions
Air speed: 28.3 l / min Test time: 1 min MPS: 0.6 um to 0.7 um PCR = Particle
Retention Capacity (%) MPS = Medium Particle Size

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