. 2008 May 13;52(5):385–396. doi: 10.1093/annhyg/men019

Table 1.

Summary of aerosol penetration (P), pressure drop and quality factor (q_f) for three respirators

Aerosol: NaCI
Respirator	Q (l min⁻¹)	Pressure drop (mmH₂O)	P _0.1μm (%)	q _{f 0.1 μm} (1 per mmH₂O)	P _{0.3 μm} (%)	q _{f 0.3 μm} (1 per mmH₂O)	P _{0.02–0.5 μm} (%)	q _{f 0.02–0.5 μm} (1 per mmH₂O)	P _{0.1–0.5 μm} (%)	q _{f 0.1–0.5 μm} (1 per mmH₂O)
N99 Model A	30	3.90 ± 0.20	0.66 ± 0.04	1.29 ± 0.06	0.35 ± 0.03	1.45 ± 0.10	0.75 ± 0.04	1.29 ± 0.06	0.43 ± 0.03	1.41 ± 0.08
	85	10.67 ± 0.58	2.92 ± 0.46	0.33 ± 0.03	0.99 ± 0.24	0.44 ± 0.05	3.20 ± 0.46	0.34 ± 0.03	1.60 ± 0.30	0.40 ± 0.04
	150	24.33 ± 2.08	5.14 ± 0.58	0.12 ± 0.01	2.07 ± 0.26	0.16 ± 0.01	5.93 ± 0.61	0.12 ± 0.01	3.13 ± 0.38	0.15 ± 0.01
N99 Model B	30	4.53 ± 0.15	0.74 ± 0.10	1.08 ± 0.06	0.44 ± 0.22	1.21 ±0.09	0.56 ± 0.11	1.20 ± 0.05	0.56 ± 0.18	1.17 ± 0.07
	85	13.00 ± 1.00	2.78 ± 0.34	0.28 ± 0.02	1.27 ± 0.50	0.34 ± 0.05	2.36 ± 0.20	0.31 ± 0.02	1.65 ± 0.14	0.32 ± 0.02
	150	24.67 ± 1.15	4.87 ± 0.94	0.12 ± 0.01	3.07 ± 1.96	0.15 ± 0.02	4.23 ± 1.27	0.13 ± 0.01	3.60 ± 1.53	0.14 ± 0.01
N95	30	2.70 ± 0.10	0.83 ± 0.20	1.78 ± 0.10	0.48 ± 0.14	1.99 ± 015	0.87 ± 0.21	1.80 ± 0.10	0.66 ± 0.21	1.89 ± 0.14
	85	7.57 ± 0.75	2.60 ± 0.51	0.49 ± 0.02	1.34 ± 0.44	0.58 ± 0.02	2.85 ± 0.44	0.49 ± 0.03	1.74 ± 0.41	0.54 ± 0.03
	150	15.83 ± 2.02	4.65 ± 0.48	0.20 ± 0.03	2.84 ± 0.38	0.23 ± 0.04	5.16 ± 0.35	0.19 ± 0.03	3.42 ± 0.46	0.26 ± 0.03
Aerosol: MS2			aerosol: Bacillus subtilis phage			aerosol: T4 phage
Respirator	Q (l min⁻¹)	P _{0.02–0.09 μm} (%)	Respirator	Q (l min⁻¹)	P _{0.1 μm} (%)	Respirator	Q (l min⁻¹)	P _{0.1 μm} (%)
N99 Model A	30	1.03 ± 0.55	N95	30	0.58 ± 0.22	N95	30	0.23 ± 0.01
	85	3.43 ± 0.86		85	1.90 ± 0.19		85	0.95 ± 0.11
	150	5.45 ± 0.35		150	3.81 ± 0.60		150	2.18 ± 0.37
N99 Model B	30	0.96 ± 0.12
	85	3.28 ± 0.20
	150	5.70 ± 0.61
N95	30*	1.69 ± 0.38
	85*	3.45 ± 0.48
	150	5.64 ± 1.94

MS2 data for the N95 respirator are taken from Balazy et al., 2006b for 30 and 84 l min⁻¹.