Table 2 Breathability test result (pressure drops) and filter quality factor (QF)

From: Attaching protein-adsorbing silica particles to the surface of cotton substrates for bioaerosol capture including SARS-CoV-2

Face Covering Material

Pressure drop compared to the unobstructed response at an air flow rate of 85 L/min (Pa)

QF (kPa -1)

Silica

152 (22 Pa/cm2)

8.6

Blank Control

143 (20 Pa/cm2)

4.6

Cotton Face Covering

166 (24 Pa/cm2)

1.7

  1. All data shown are representative of at least three independent experiments. The QF was calculated using Eq. 2 with the mean filter efficiency of cytochrome c.
Back to article page