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O2/He - what nasties could there be in it?

1K views 8 replies 7 participants last post by  dlegros 
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[b said:
Quote[/b] (Alan57 @ Feb. 05 2004,21:51)]My He is 99.996% (He 4.6) and is in a 220bar 50l botle commonly referred to as a J bottle.
<font color='#0000FF'>also check for parts per million of hydrocarbons,to keep everything o2 clean.
most gas stations with have a spec sheet on the gases and some will do custom mixes at a price.
the best i can get is 200bar?
he has just gone up to £107 +vat for a j.
cheers
barrie
 
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