Particle Size-Selective Assessment of Protection of European Standard FFP Respirators and Surgical Masks against Particles-Tested with Human Subjects

Table 1

Fit factors of 6 FFP respirators and 3 surgical masks (SMs). Total observations are 30 (30 subjects).

	FFP1_A	FFP2_A	FFP3_A	FFP1_B	FFP2_B	FFP3_B	SM_C	SM_D	SM_E
Percentage of fit factors > 100 (%)	93.3	80.0	73.3	60.0	93.3	76.7	0	0	0
Geometric mean	171.6	112.4	103.2	75.0	174.2	138.4	3.0	2.1	3.1
Geometric standard deviation	1.7	2.2	3.0	2.9	2.5	4.9	1.7	1.6	1.8