Tseng10 | 2007 | | 5–255 sec | 2.51–6.50 mJ/cm2 | 1× | 2.51–6.50 mJ/cm2 | 30.5cm | 4 × 8 W | Kills 99%, decreased effectiveness at higher humidity | 21–28°C, 55% & 85% RH | |
Viscusi29 | 2009 | 0.18–0.20 mW/cm2 | 15 min/side | 324–360 mJ/cm2 | 3× | 0.97–1.08 J/cm2 | | 40W | | 21°C, 50% RH | No observable physical changes, filtration performance not affected, no noticeable changes in airflow resistance |
Bergman36 | 2010 | 1.8 mW/cm2 | 15 min | 1.62 J/cm2 | 3× | 4.86 J/cm2 | 25 cm | 40 W | | 21°C, 50% RH | No observable physical changes, no significant change in penetration |
Heimbuch33 | 2011 | 1.6–2.2 mW/cm2 | 15 min | 1.44–1.98 J/cm2 | 1× | 1.44–1.98 J/cm2 | 25 cm | 80 W | >4 log reduction | | Effective decontamination against droplet and aerosolized influenza challenge, no change to fit after decontamination |
Bergman35 | 2011 | 1.6–2.0 mW/cm2 | 15 min | 1.44–1.98 J/cm2 | 3× | 4.32–5.94 J/cm2 | | 40 W | >4 log reduction | 21°C, 50% RH | Fit not significantly affected after 4 fit tests, no degradation |
Viscusi34 | 2011 | 1.6–2.0 mW/cm2 | 15 min/side | 2.88–3.96 J/cm2 | 1× | 2.88–3.96 J/cm2 | | 40 W | | 21°C, 50% RH | No changes in fit, odor detection, comfort, or donning difficulty with UVGI- masks were redonned 5× |
Lore37 | 2012 | 1.6–2.2 mW/cm2 | 15 min | 1.44–1.98 J/cm2 | 3× | 4.32–5.94 J/cm2 | 25 cm | 2 × 15 W | >4 log reduction | | Decontamination methods did not significantly degrade filter performance at 300 nm particle size |
Lindsley38 | 2015 | | n/a | 120–950 J/cm2 | 1× | 120–950 J/cm2 | 6.2 cm | 2 × 15 W | | 27°C, 25% RH | No significance change in flow resistance, decreased penetration strength and strap breaking strength at very high exposure |
Mills11 | 2018 | | 60–70 sec | 1.1 J/cm2 | 1× | 1.1 J/cm2 | 1 m | 8 × 0.39 W/cm2 | >3 mean log reduction, straps less effectively decontaminated | 21°C, 50% RH | Masks oversaturated with virus in physiologically relevant solvents sebum and mucin, ultraviolet germicidal irradiation levels fully decontaminated masks, statistically significant reduction in virus viability |
Heimbuch12 | 2019 | 16–18 mW/cm2 | 60–70 sec | 1.0–1.2 J/cm2 | 20× | 20 J/cm2 | 1 m | 8 × 0.39 W/cm2 | >3 mean log reduction, straps less effectively decontaminated, tested on SARS-CoV-1 | 22.5°C | No meaningfully significant effect on fit, air flow resistance, or particle penetration for 15 models tested, some models had significant effects due to donning/doffing cycles |
Card42 | 2020 | 0.1 mW/cm2 | 20 min/side | 240 mJ/cm2 | | | 60.6 cm | 30 W | | | |
Lowe9 | 2020 | 0.2 mW/cm2 | 5–6 min | 300 mJ/cm2 | | | 10 ft | 16x | | | |