It *can* be the same. However, oxygen graded for welding, but not
for medical use, isn't safe for medical use.
Wether or not a store sells medical grade oxygen to welders is up
to the store and not universally true.
firstname.lastname@example.org (Doug Miller) wrote in
the people who said they're different said it a long time ago when they
actually were different.
Times have changed,they no longer actually are different.
did you not read the article cited? it was very informative.
There is a LOT of shit done in hospitals simply because that is the way
they've always done it. To suggest otherwise to them will get you a
look that suggests you've lost your mind.
I deal with policies all the time that closer examination would reveal
are outdated and kind of stupid if you consider the current realities.
But the Powers That Be know what they know and nobody can tell them
different. So we still do what we've always done.... because we've
always done it that way.
A lawyer would probably make a big deal about "welding" oxygen instead
of USP in much the same way the US Navy made a big deal about the
captain of the USS Indianapolis not zigzaging when his ship was
torpedoed. The commander of the Japanese submarine testified at his
court martial that it wouldn't have mattered one way or the other; he
still would have nailed him. The Navy didn't care... because policy
stated you should always zigzag when submarines might be around. After
all, they'd always done it that way.
Many of the folks who determine these policies are dinosaurs, and about
As has been noted many times already, the welding grade purity standard
is higher than that for the medical grade. People who do not know
anything about welding think it's some low standards dirty process, but
that is simply not the reality. Impurities in O2 that are harmless for
human use, will cause welds to fail inspections.
Welding O2 standard 99.99% pure O2
Medical O2 standard 99.95% pure O2
The reality is that the actual product in the cylinders is closer to
99.999% pure, the analytical grade standard.
Yes, it's the same. Anything to the contrary is "urban legend" or hype
for the purpose of charging more for the same stuff. All the O2 grades,
including the five nines analytical grade are filled from the same cryo
tanks, and only the analytical grade gets any extra testing to ensure
the 99.999% spec. The reality is that the welding O2 purity standard
(99.99%) is higher than the medical O2 purity standard (99.95%), and
that the actual product from the gas suppliers exceeds those purity
standards by a wide margin.
Amazing: All those posts, guesses and "sound good" types mostly, for a
question that's so easily answered with a search engine that it's actually
pathetic. This is precsely why groups like this have such low crediblity and
high drift rates.
On Saturday, June 19, 2010 at 6:25:46 AM UTC-7, AZ Nomad wrote:
It is not necessarily the Oxygen that is different but the tank. The tanks
look the same on the outside but are markered different. Medical oxygen tan
ks are held to a higher standard than industrial oxygen. Medical tanks are
"Oxygen clean" whereas welding tanks may not be as clean. Medical oxygen is
also dryer to prevent rust in the tanks.
Bullshit . That medical O2 comes out of the very same tanks as welding O2
. And in some cases welding oxy is held to a higher standard of purity . And
any impurities in the tanks can cause the same problems , no matter the
intended end use .
CHECK THE DATE ON THAT POST , you're responding to stuff from 5 years ago
The main difference is that Insurance won't pay for it out of the other
tanks. The other thing is that I don't know if the regulators are
similar enough to regulate how much O2 you get and if they are
compatible with the tubing for delivery.
?Statistics are like bikinis. What they reveal is suggestive,
but what they conceal is vital.?
On Thu, 28 May 2015 22:19:29 -0400, email@example.com wrote:
It seems to me all this depends on what the intended concentration is in
the first place. If one is 100% O2, or 98% and the other is 92%,
they're both still way higher than air. As long as the other 2% or 8%
isn't poisonous, if it's nitirogen with a little helium and a trace of
argon and a bit of xenon, it's going to work for breathing for sure, and
I would think it would work great for a torch. As long as their
both high, it doesnt' seem to matter which has a higher standard.
Though I think AZ may be right and there shouldn't be too much water in
the tank or your lungs may rust.
I have never seen oxygen at a welding store that wasn't medical rated
on the label. Perhaps if you are just swapping a little prestolite
tank it might not be but the 80s and larger I see have the medical
label on them.
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