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> next morning we went to the Port to mix the EAN80
> and get the boat (the filling station is near the port, far from the dive
> shop). We mixed several EAN80 bottles and I almost aborted the first day of
> diving, because when we started analyzing the mixes, we got all bottles
reading
> anything between 50% and 70% of O2. Of course we didn't have the tables for
> those deco mixes. After a long (30-45 min) and heated discussion with the rest
> of the team (they wanted to dive anyway, on air), we decided to reanalyze the
> bottles and sure enough all bottles read 80% O2 ...
> 
> I hope this helps.

Was the air pumped in last? If so this would tend to support the theory that
the 
last gas pumped in is hottest and rises to the top and is disproportionately 
represented in a test right after a fill.

Rick

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