Fig. 6From: Virus matrix interference on assessment of virucidal activity of high-touch surfaces designed to prevent hospital-acquired infectionsA As in Fig. 5B, virus suspended in three different matrices was dried onto the copper alloy. The alloy was exposed to each virus suspension a total of three times. Each bar is the geometric mean of two technical replicates and two biological replicates (n = 4). Error bars represent the standard deviation. Asterisks indicate at least one replicate was at or below the detection limit. B ICP-OES of samples collected in A. Only the copper ion concentrations are presented here for clarity. Error bars represent the standard deviation. Each colour corresponds to the exposureBack to article page