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On Tue, 7 Nov 1995 gmcgee1@fo*.co* wrote:
It doesn't make much sense that they make you O2 clean the tank just 
because you got a normoxic fill unless it was from a non-filtered oil 
lubricated compressor.
> 
> If you should want the dive shop to put a normoxic fill in the tank, they will
> remove the nitrox label.  Thereby requiring you to have the tank cleaned again
> for nitrox use.
> 
> Now if you are filling the tanks yourself (homebrew) with nitrox then you
don't
> have to label the tanks.  But, most (not all) dive shops require the tanks to
> be labeled for the gas content other then air.
> 
> How about it divers, What's the norm for the dive shops in your area?
Bob Favorite

p.s. to be filled in my area a tank has to have a tag marking %O2 and some 
distinguishing marks that it is O2 clean.  The main risk from a non-clean 
tank isn't to the diver but to the person filling and the shops want to 
know the tank won't go boom...any chance it isn't(i.e. nothing left in 
tank or it went out with a different %02 than it came in with and it 
needs to be o2 cleaned.

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