Ok, can I assume you had a reason to be there? The lpcal company requires a business to purchase it. Individuals cannot purchase the pure stuff if they aren't using it for work in most cases.

I doubt its like that everywhere. So refer to the rest of my other comment on how likely this method is to fail.

Oh and finding pure nitrogen gas in 2023? Forget about it.

Unless you do something for work that will justify to a local company they should sell you a large cannister.

Easier to just buy a fent analogue than it is to buy nitrogen where I live.

I think about it quite a lot, even that small percent chance it would fail and leave me paralyzed is enough to fear the outcome.

Too risky. If you don't tie your hands up, while passing out you will likely rip out whatever you're breathing out of with the nitrogen.

Requires a good cocktail that will essentially put you under anethesia unless someone is willing to help you in the act.