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. 2010 Jan 15;76(6):2032–2035. doi: 10.1128/AEM.02174-09

FIG. 2.

FIG. 2.

Efficacy of copper and silver ions in waterborne-pathogen inactivation. •, control; ○, 0.2/0.02 mg/liter; □, 0.4/0.04 mg/liter; ▵, 0.8/0.08 mg/liter (Cu/Ag). ↕ indicates 95% confidence interval. (a) Cu/Ag ions achieved more than 99.99% reduction of biofilm-associated P. aeruginosa within 24 h. (b) Cu/Ag ions achieved more than 99.999% reduction of plankton-associated P. aeruginosa within 12 h. (c) Cu/Ag ions achieved more than 99.9% reduction of biofilm-associated S. maltophilia within 48 h. (d) Cu/Ag ions achieved more than 99.99999% reduction of plankton-associated S. maltophilia within 72 h. (e) Cu/Ag ions achieved more than 99.9% reduction of biofilm-associated A. baumannii within 12 h. (f) Cu/Ag ion concentrations at 0.4/0.04 and 0.8/0.08 mg/liter achieved more than 99% reduction of plankton-associated A. baumannii within 100 h.