Fig. 3From: Antimicrobial properties of a novel copper-based composite coating with potential for use in healthcare facilitiesFrequency distribution of microbial burden on Copper Armour™ coated surfaces and control surfaces. The microbial burden observed for each sample was classified into three categories: below the detection threshold (green), 1 to 250 cfu/100 cm2 (yellow) or > 250 cfu/100 cm2 (red)Back to article page