Table 1.

Evaluation of virus titres with respect to the exposure time.

	Length of incubation
	1 min		10 min		30 min		120 min			300 min
	Log Titre	Log Difference	Log Titre	Log Difference	Log Titre	Log Difference	Log Titre	Log Difference	% Reduction	Log Titre	Log Difference	% Reduction
3D Copper Annealed (A)	105.1	−0.4	105.0	−0.2	105.1	−0.4	103.9	−1.3	92	103.3	−1.9	97.9
3D Copper (N)	104.9	−0.5	105.1	−0.1	105.1	−0.4	103.4	−1.8	96	103.0	−2.2	99.2
Stainless steel	105.1	−0.4	105.2	0	105.1	−0.4	104.9	−0.3	49	105.5	0.3	0
Positive control	105.1	−0.5	105.0	−0.1	105.0	−0.5	104.6	−0.6	74.9	104.2	−1.0	90
SARS-CoV-2 only	105.6		105.6		105.5		105.2			105.2