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Jason, I guess in principle what you are saying is that Nitrox 32 bought from a
shop is exactly the same as nitrox 32 you mixed in your shed, and of course,
provided you use the correct gases and materials of course it is.
However, if you don't know how to mix gas, then a)it might not be the same - it
may be analysed incorrectly or contain contaminants, and b) a self taught mixer
may place him or herself at risk by not following safe practices.
Additionally, I would envisage that *most* potential users of nitrox do not
want
to mix their own - they will wish to go and buy it, as they do their air fills.
This means the store needs to invest in equipment, and for volume this
problably
means oil free compressors, a mixing panel, storage banks etc. - a lot of
dollars. Therefore, somewhere along the line, if we wish other divers (less
technically able than yourself?) to be able to take advantage of our new gases,
the dive industry needs to be able to make some money so they are *able* to
expand their facilities. I guess they also need to eat and pay the mortgage as
well, or isn't that allowed?
Also, it would seem that most of the information that we currently use has come
in one form or another from the "private" agencies or the people behind them,
and so we should bear that in mind when we give these guys a hard time.
Martin
In your message dated Thursday 20, April 1995 you wrote :
> > Can anyone explain the difference between me home brewing Nitrox (or trimix)
> > and a shop brewing it? Why is it that I get flamed for suggesting one, and
> > the shops are OK when they do it. One nitrox instructor actually said that
> > I was being irresponsible if I used Certified Diving Mixture from BOC Gasses
> > and that I shoud get "much safer" mixes from a shop. Does it strike anyone
> > else here that there is alot more to this than just safety (conspirisy
> > theory of the day)
> > Cheers Jason :)
> Jason, if you don't understand the difference between obtaining life support
> gasses from an outlet certified to deliver them and somebody with a small but
> dangerous amount of knowledge "brewing their own" then there is no point in
> anyone on this list trying to explain it to you.
> If you are qualified, as you keep intimating, to do this, I suggest you stop
> encouraging people who are not qualified to place themselves at risk.
>
> Happy diving
> Martin
>
> Hi Martin,
> The point I was trying to make is that these "certified" outlets are
> only certified by some private organisation. I could just as easily
> start my own private organisation and "certifiy" myself to mix gas.
>
> The methods used to mix gas by the "certified" outlets here are
> *exactly* the same as those used by home brewers. Real goverenment
> certified labs, such as those maintained by BOC, use quite different
> equipment and techniques. The term "certified" as used by these
> private organisations is misleading in that it tends to make the
> uninformed user think that the "certified diving mixture" that they
> get is infact real "certified diving mixture" when infact it is home
> brew made in a shop. (shop brew?) Gas analysis for real "certified
> diving mix" costs about $50 per cylinder and is far more involved than
> simply flowing it across a couple of miniox's.
>
> Do you disagree with me on this point?
>
> Cheers Jason :)
>
> PS I probably phrased my earlier post rather badly. I strongly
> encourage everyone to avoid all risk!
>
> PPS I'm not "qualified" in any respect by any private scuba organisation
> with the exception of a FAUI SCUBA Diver (entry level cert), a PADI
> resuce diver, and a CDAA Sinkhole diver. I repeat, I have no Nitrox, Tri-
> mix or tech certificates from any private tech diving orgainisation.
>
> --
> Send mail for the `techdiver' mailing list to `techdiver@opal.com'.
> Send subscription/archive requests to `techdiver-request@opal.com'.
>
>
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