Plasma-activated water tests show concentration matters for effective bacterial disinfection

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Researchers at EPFL tested how concentrations of plasma-activated water affect Escherichia coli disinfection under nutrient-rich conditions. By combining standard colony counts with nanomotion sensing, the study examines bacterial activity and the effectiveness of the treatment.

In a study published in npj Clean Water, researchers from EPFL investigated how Escherichia coli responds to different concentrations of plasma-activated water (PAW) under nutrient-rich conditions. The team combined conventional colony-forming unit (CFU) counting with nanomotion sensing, a technique that detects nanoscale oscillations produced by metabolically active bacteria.