Spreading a Durable Protective Layer of Quaternary Ammonium Agents on an N95 Respirator for Predecontamination of Airborne Mycobacterium tuberculosis and Viruses Using Mycobacterium smegmatis and Bacteriophage MS2 as Models

Table 3

The filtration efficiency of untreated and GS75-coated (only the outer layer) N95 respirator layers.

	M. smegmatis		E. coli		MS2 phage
	10^4 CFU/m^3	10^5 CFU/m^3	10^4 CFU/m^3	10^5 CFU/m^3	10^4 PFU/m^3	10^5 PFU/m^3
Untreated	99.8 (0.34)	99.9 (0.17)	99.8 (0.28)	98.7 (0.20)	96.0 (0.04)	99.2 (0.01)
GS75	>99.9 (0)	99.8 (0.34)	99.6 (0.63)	98.8 (0.37)	99 (0)	99.9 (0)

The sample size is 36. Values are provided as percentages (%). The numbers in parentheses represent standard deviations.