Plasma are conductive assemblies of charged and neutral particles. It carries electrical currents and generate magnetic fields. Much like sunlight or lightning does in the atmosphere, cold plasma tube produces natural streams of positive and negative oxygen ions.

The negative ions contain an extra electron while the positive ions are missing an electron resulting in an unstable condition. In an effort to re-stabilize, these bipolar ions seek out atoms and molecules in the air to trade electrons with, effectively neutralizing particulate matter, bacteria and virus cells, odorous gases and aerosols, and VOCs.