Fig 9. Kinetics in reduction of bacteria (E. coli) viability for one-day and 4 weeks tarnished/corroded Cu metal surfaces following the quasi-dry protocol up to 20 h of incubation at 37°C.

Each point is the average value of 6 NA plates including 2 replica from 3 different coupons and the statistic p-values were at all conditions < 0.05 (see detailed values in S2 Table).