Plasma gas, such as helium, argon, and mixtures of {HEAD ~ an inert gas} with nitrogen, oxygen, {TAIL ~ air}, carbon dioxide, methane, acetylene, propane, ammonia, or mixtures thereof, can be used with this treater to sustain a uniform and steady plasma at atmospheric pressure 
Plasma gas , such as helium , argon , and mixtures of { HEAD ~ an inert gas } with nitrogen , oxygen , { TAIL ~ air } , carbon dioxide , methane , acetylene , propane , ammonia , or mixtures thereof , can be used with this treater to sustain a uniform and steady plasma at atmospheric pressure
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