Does anyone know if a special  coating  type would be required/recommended  for a medical Ethylene Oxide sterilization process?

Of course parylene would likely be the gold standard but it is not an option in this instance. 

I seem to recall that a past paper from Hunt/NPL supports  the theory that just about  all coatings are permeable to  vapors .    (~ also per 3-11G group)

If that is  truly the case  not sure if it really matters which coating it is (not AR of course). Reason I am not willing to state that yet is I wonder  if Ethylene Oxide would have any other detrimental effect on certain classes of coatings  such as yellowing, embrittlement, etc.

Any thoughts would be appreciated


Rich  Kraszewski 
Senior Staff Process Engineer
Plexus Engineering Solutions 


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