Table 4.

Test conditions and efficacy results for spores of Bacillus anthracis and Bacillus atrophaeus

Material	Exposure time (min)	Average UVC dose (mJ cm−2)	Average efficacy (LR) B. atrophaeus	Average efficacy (LR) ames	Average T (°C)	Average RH %	Average UVC intensity (mW cm−2)
Wood	120	3384	0.04 ± 0.15	0.82 ± 0.02	23 ± 0.9	59 ± 1.7	0.47 ± 0.05
	240	6768	0.42 ± 0.22	0.89 ± 0.23
	480	13 536	0.74 ± 0.46	2.32 ± 0.13
Glass	120	3384	2.55 ± 0.29	4.73 ± 0.39
	240	6768	3.17 ± 0.91	3.93 ± 0.72
	480	13 536	4.14 ± 0.37	5.73 ± 0.76
Carpet	120	3384	0.17 ± 0.17	0.58 ± 0.06
	240	6768	1.2 ± 0.00	1.17 ± 0.03
	480	13 536	1.19 ± 0.12	2.65 ± 0.09
Laminate	120	3384	1.53 ± 1.06	1.2 ± 0.05
	240	6768	1.76 ± 0.92	1.45 ± 0.51
	480	13 536	2.47 ± 0.59	2.77 ± 1.05
Glass	120	3384	3.48 ± 1.89	2.55 ± 1.00	22 ± 0.7	67 ± 3.0	0.47 ± 0.05
	240	6,68	3.66 ± 0.41	3.69 ± 0.50
	480	13 536	3.71 ± 0.04	2.80 ± 0.47
Laminate	120	3384	1.54 ± 0.73	1.33 ± 1.36
	240	6768	1.89 ± 1.07	1.42 ± 1.00
	480	13 536	2.85 ± 0.97	2.64 ± 1.07

Spores were deposited on materials using a suspension inoculation; UVC source was low-pressure Hg lamp.