Table 5.

Test conditions and efficacy results for Bacillus atrophaeus, using the LED UVC lamp, high versus low relative humidity

Material	Exposure time (min)	Average UVC dose mJ cm−2	Average Efficacy (LR) LED lamp	Average T (°C)	Average RH (%)	Average UVC intensity (mW cm−2)
Carpet	60	900	2·94 ± 0·28	23 ± 0·8	39 ± 3·4	0·25 ± 0·03
	120	1800	2·67 ± 0·10
	240	3600	3·97 ± 0·16
	360	5400	3·57 ± 0·09
Glass	60	900	4·33 ± 0·30
	120	1800	4·95 ± 0·41
	240	3600	5·06 ± 0·82
	360	5400	4·02 ± 0·15
Laminate	60	900	4·31 ± 0·27
	120	1800	4·8 ± 0·18
	240	3600	4·79 ± 0·43
	360	5400	3·95 ± 0·20
Wood	60	900	2·21 ± 0·29
	120	1800	2·58 ± 0·66
	240	3600	3·37 ± 0·54
	360	5400	3·2 ± 0·10
Carpet	60	900	1·2 ± 0·79	22 ± 0·8	73 ± 3·6	0·25 ± 0·04
	120	1800	1·61 ± 1·03
	240	3600	2·29 ± 0·86
	360	5400	2·08 ± 0·57
Glass	60	900	2·6 ± 0·80
	120	1800	2·58 ± 0·93
	240	3600	3·32 ± 0·63
	360	5400	2·99 ± 0·64
Laminate	60	900	3·06 ± 0·85
	120	1800	3·17 ± 0·93
	240	3600	3·18 ± 0·46
	360	5400	3·06 ± 0·55
Wood	60	900	1·12 ± 0·86
	120	1800	2·05 ± 0·51
	240	3600	1·87 ± 1·87
	360	5400	1·72 ± 0·46

Spores were deposited onto materials via suspension inoculation.