On 01/01/2021 10:32, Reentrant wrote:
On 01/01/2021 10:07, No Name wrote:
On 01/01/2021 09:36, John J wrote:
On Thursday, 31 December 2020 at 18:36:35 UTC, undefined wrote:
David expressed precisely :
Instinct says that if you are very low on oxygen almost anything might
improve your chances.
However when the price gets towards £1,000 the sharp intake of breath
might well increase oxygen saturation anyway.
You can get digital Oxymeters quite cheaply £7. They clip on a finger,
self contained, working on batteries and show the oxygen concentration
in your blood, plus heart rate.

Is there any actual difference in the gas inside an oxygen bottle for
respirators and oxygen bottles for gas axes?


yes..... purity and contamination

medical grade oxygen is 99.99% oxygen when filled into the bottle


The cylinder must be of an inert material so it does not contaminate
the oxygen while being stored before use.

Oxygen at high pressure is reactive enough that the interior surface
will passivate pretty quickly. It is more about anything else toxic in
with it like ozone impurities for instance.

A flame doesn't care whether it gets fed with O2 or O3 but a human does.

What about water content? Breathing pure O2 at 0% humidity won't be good
for already-struggling lungs.

Breathing pure oxygen for too long isn't all that good for you anyway.
They typically enrich the air being breathed in by some proportion
accroding to the patients needs - lowest enrichment to get blood O2 up.

It makes a significant boost to seeing faint objects at full dark
adaption (especially at high altitude observatories to have a few
breaths of pure O2). Apart from that it isn't recommended unless
suffering from altitude sickness (which is sort of what Covid does).

DIY oxygen tent is probably a bad idea anyway. Several smokers in third
world countries have burned to death whilst being treated in them.

This one in the UK is pretty scary too. I'm not sure how it started but
my guess would be using the wrong lubricant on the high pressure side.

https://www.dailymail.co.uk/news/art...sion-home.html

--
Regards,
Martin Brown