A closer look at “EPFL Study: Plasma-Activated Water Concentration Key to E. coli Disinfection”, exactly as the source publishes it. Researchers at EPFL have found that the concentration of plasma-activated water (PAW) significantly influences its ability to disinfect Escherichia coli, according to a new study in npj Clean Water. The team tested PAW under nutrient-rich conditions, combining traditional colony-forming unit (CFU) counting with nanomotion sensing—a cutting-edge method that detects nanoscale vibrations from metabolically active bacteria. Their results show that higher PAW concentrations lead to greater bacterial inactivation, but the relationship is not linear;
there is an optimal range for effectiveness. This matters because PAW is emerging as a promising, chemical-free disinfectant for food safety, medical devices, and water treatment, yet its practical use requires precise dosing. The study provides quantitative data to guide real-world applications, potentially reducing reliance on harsh chemicals. This listing links straight to the original page, where the content is available in full.