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