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At 09:44 AM 4/18/96 -0400, Nick Simicich wrote: um, didn't we just say the same thing. I said the filling is identical, i.e., same source (lox). Some prep botlles differently depending on grade, but my guys treat all bottles the same. Also, they analyze with a teladyne. What was your point...I missed it. >-----BEGIN PGP SIGNED MESSAGE----- > >On Wed, 17 Apr 1996, Jess Armantrout wrote: > >> I think it is well known among people who have a clue that the filling is >> always done the same. But for some funny reason, I personnally get a warm >> fuzzy feeling from a lot number than can be traced. Now I know that is no >> guarentee either, but for the buck extra, I 'll splurge. I know my supplier >> treats all bottles identically when they come in (they are drained and >> purged) but i am not sure if all suplliers do this for industrial. I think >> this is required for medical. Anyway, I still prefer gas in a botlle marked >> medical, be it o2 or he2. > >Um, this really depends on the supplier. I asked at the gas supplier >in Peekskill, NY, and they indicated that bottles for industrial O2 >were pumped down once, and medical bottles were pumped down twice, >with a flush of O2 between the pumpdowns. So you really need to ask >at your supplier. Don't make any presumptions. > >The biggest risk is that acetylene is dissolved in a solvent, and that >if the check valves are dead, the solvent or acetylene will back flow >to the O2 bottle if the O2 is run to full empty, and that you will get >a smell or a high when you breathe it. Pumping the bottle down twice >supposedly eliminates any possibility of residual contaminants, or so >the seller told me. As noted below, this supplier filled the O2 >bottles from the same source. The Peekskill supplier indicated that >they would move bottles from the industrial to the medical supply at >need. YMMV. > >> At 10:22 AM 4/17/96 -0400, Mario Nicola wrote: >> >> I heard they were using industrial oxygen for nitrox and telling people >> >> aviators was harmful. Any truth to this that you know of? >> > >> > This is another fine example of BS and strokery. >> > >> > Aviators oxygen, I believe is checked to make sure it >> >has a low moister content for obvious reasons, but I'm not >> >an aviator so don' t take my word for this. > >I believe that Aviator's O2 is USP O2 with a moisture content limit, >so that the regs won't freeze. > >> > As far as industrial and medical oxygen is concerned >> >there is absolutely no deference between the two. >> > The cylinders are filled from the same liquid oxygen bank, >> >the difference is in the maintenance and handling of the tanks, >> >and believe me, I have seen industrial tanks in a lot >> >better shape than medical cylinders. This does not mean this is >> >always the case. >> > Oxygen is oxygen is oxygen. No deference other than what you >> >are breathing it out of, and impurities that can enter the tank during >> >transfer. This is why o2 should always be analyzed before using or >> >mixing. > >Do you believe that lots of folks actually analyze their O2 before >using it, by, for example, running it through a gas chromatograph or >some other good analysis technique? I don't think running it past a >O2 analyzer counts as analyzed. > > > > >-----BEGIN PGP SIGNATURE----- >Version: 2.6.2 >Comment: Processed by mkpgp1.6, a Pine/PGP interface. > >iQCVAwUBMXZFLhRmU0oGr+olAQFFMwQAztbf0IHouIaiFz1gLuEOJ5m/SvbQoxvc >aFp0VZKZvxpaQo4R94LOC4nZ3adEDIxyyNIZvKZaEoKzwe2YUTYp6iiYXS+7+7+q >xX+48/3NeCfBZBESjQ8cUGyp2RzKT+16LQrGwfDjfSBUDV4ZXOFKmiEIuGoq6Cf6 >nxEPAMxjssM= >=kZ12 >-----END PGP SIGNATURE----- > > >Nick Simicich - njs@sc*.em*.ne* - (last choice) njs@bc*.vn*.ib*.co* >http://scifi.emi.net/njs.html -- Stop by and Light Up The World! >
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