Ummm just a word of caution.......not that it might apply here, but just in case.
Nitrogen displaces oxygen.
In a confined space that could be a problem if the bottle has a leak .
Walk into a room that is filled with Nitrogen and you will suffocate ( unless there is sufficient ventilation of course).
Just something I learned whilst working on Varanus Island...... ( drying out pipes)
Bartman
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