Re: [APML] Dry Nitrogen & Pre purified Grade 5 same ??

["Robert Reeves" <reeves10@swbell.net>]

> Good Morning group, trying to put together a nitrogen purge system on a
> Nikon F3. Got a lot of info  on here over a year ago & finally got the
> regulator &  low-flow meter.
> I called the gas supply store & they say "dry nitrogen" is "old school" &
> what they carry is Grade 5 pre-purified (grade 5.5 & 6 is the highest).
This
> is supposed to be much better  because the dry nitrogen was pumped in a
way
> that it was possible to get some oil in the tank. The pre-purified
> eliminates that.
> So can I use this pre-purified grade 5 stuff ? Any info on this subject is
> appreciated. Gerry

I don't see why not.  For years we have all used the "old school" stuff with
good results.  This pre-purified stuff sounds like overkill for our purpose,
but if it is all that is available, I can't see any reason not to use it as
long as cost isn't an issue.  Good luck!

Robert Reeves                      reeves10@swbell.net
520 Rittiman Rd.                   www.robertreeves.com
San Antonio, Texas 78209    210-828-9036
USA                                     29.484  98.440  200 meters


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