Table 4. Geobacillus endospore loading inoculated onto surgical masks and passed through the gas phase Advanced Oxidation Process reactor.

Non-treated controls were used to determine the initial endospore levels.

Outside	Log CFU (Enrichment)	LCR	Inside	Log CFU (Enrichment)	LCR
Control
Mask I Outside	6.44±0.12		Mask I Inside	6.16±0.08
Mask II Outside	6.58±0.34		Mask II Inside	6.35±0.11
Mask III Outside	6.41±0.29		Mask III Inside	6.31±0.21
Average	6.48±0.09		Average	6.27±0.07
Clean Flow
Mask 1			Mask 1
A*	Negative	6.48	D	Negative	6.27
B	Negative	6.48	E	Negative	6.27
C	Negative	6.48	F	Negative	6.27
Mask 2			Mask 2
A	Negative	6.48	D	Negative	6.27
B	Negative	6.48	E	Negative	6.27
C	Negative	6.48	F	Negative	6.27
Mask 3			Mask 3
A	Negative	6.48	D	Negative	6.27
B	Negative	6.48	E	Negative	6.27
C	Negative	6.48	F	Negative	6.27
Mask 4			Mask 4
A	Negative	6.48	D	Negative	6.27
B	Negative	6.48	E	Negative	6.27
C	Negative	6.48	F	Negative	6.27
Mask 5			Mask 5
A	Negative	6.48	D	Negative	6.27
B	Negative	6.48	E	Negative	6.27
C	Negative	6.48	F	Negative	6.27
Mask 6			Mask 6
A	Negative	6.48	D	Negative	6.27
B	Negative	6.48	E	Negative	6.27
C	Negative	6.48	F	Negative	6.27