Sometimes they can lie about the purity of nitrogen. Sometimes they can say it's "99.999% pure N2" and then it's actually less pure than that, though not always the case it depends where it was purchased.
Yes, that's what should be done, rather than nitrogen concentration testing.
Yeah it's becuase it doesn't make sense. Nitrogen is explosive when coming into contact with fire and it seems odd this person would suggest that but who knows maybe their heart was in the right place and they were misinformed. Do I recommend that method to test? No. I'm simply wanting to find a way to get better testing results without using a surplus of nitrogen gas using the oxygen meter that was purchased on Amazon. Will try looking more in the forum and peaceful pill website.
N2 is 'inert', it's not flammable.
I was going to say this as well. However, I think a candle could be a useful indicator if a oxygen analyzer isn't available. You could use direct nitrogen air flow at a candle, and it would probably look at least slightly different whether the nitrogen is pure or not. A more complex method is putting a candle in place of your head in an exit bag setup and seeing if the candle gets extinguished (although I don't know the relative oxygen levels required to sustain a candle vs human survival).
The candle will go out as it uses oxygen to burn. If nitrogen is from a professional supplier there is 0 reason to test it beyond what is on the coa as they have already fully tested it themselves
Candle in an enclosed container would go out by itself eventually as it uses up all the O2,just as it would pumping N2 into it(timeframes of these 2 are a little different I would assume).
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