Journal of Dental Hygiene Science : eISSN 2233-7679

Table 2

Type of Mask and Filtration Effect

Mask type Filtration efficiency (%) Particle size (mm)
FFP1 and P1 ≥80 ≥0.3
FFP2 and P2 ≥94 ≥0.3
N95 ≥95 ≥0.3
N99 and FFP3 ≥99 ≥0.023
P3 ≥99.95 ≥0.3
N100 ≥99.97 ≥0.02
J Dent Hyg Sci 2021;21:1-7 https://doi.org/10.17135/jdhs.2021.21.1.1
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