Help Helium Purity for Exit Bag

[hawkshorizon]

Quick question: how pure does the helium need to be for a successful ctb?

And as a follow up, does someone know of a company that supplies/sells helium tanks in the US?

Thank you everyone for your input.

 

[locked*n*loaded]

100%. I don't think they make it, but probably 98% or 99% would probably work, too. Balloon helium mixed with air won't work. That's usually like 80% helium, maybe even a little less. Any welding shop sells helium, as do gas suppliers.

 

[Kbeau]

Quick question: how pure does the helium need to be for a successful ctb?

And as a follow up, does someone know of a company that supplies/sells helium tanks in the US?

Thank you everyone for your input.

Might I ask why helium and not nitrogen? I think nitrogen is much easier to obtain

 

[locked*n*loaded]

Might I ask why helium and not nitrogen? I think nitrogen is much easier to obtain

This^

 

[hawkshorizon]

Might I ask why helium and not nitrogen? I think nitrogen is much easier to obtain

Thank you for the question. Honestly, any of the suggested inert gasses would be fine. I asked about helium because i thought it would be easier to obtain. Could you pm me if you know anything about nitrogen. Thanks.

 

[grapevoid]

Quick question: how pure does the helium need to be for a successful ctb?

And as a follow up, does someone know of a company that supplies/sells helium tanks in the US?

Thank you everyone for your input.

99 percent is sufficient and can be found on amazon.

 

[hawkshorizon]

99 percent is sufficient and can be found on amazon.

99 percent is sufficient and can be found on amazon.

I did check on Amazon, but none of the products I looked at had good user reviews. I don't want to end up a vegetable because of a faulty product. That's my worse nightmare.

 

[grapevoid]

I did check on Amazon, but none of the products I looked at had good user reviews. I don't want to end up a vegetable because of a faulty product. That's my worse nightmare.

Hmm. I used one from amazon, it did not fail or have any issues. I had somehow removed or moved myself and pulled the hood off after I had passed out, but didn't have any issues with the helium. I do not know enough to give you any real advice on that though lol

 

[hawkshorizon]

Hmm. I used one from amazon, it did not fail or have any issues. I had somehow removed or moved myself and pulled the hood off after I had passed out, but didn't have any issues with the helium. I do not know enough to give you any real advice on that though lol

I'm sorry you had to undergo what must have been a wild experience.

I'm looking at other options right now, like argon or hydrogen, but I will come back to this option if something better doesn't pan out.

I hope you'll forgive me for asking, but do you remember which product you chose for your ctb attempt?

And thanks for your input.

 

[Kbeau]

I did check on Amazon, but none of the products I looked at had good user reviews. I don't want to end up a vegetable because of a faulty product. That's my worse nightmare.

Yes, you have to have everything right. In terms of gas:

"The March Update - firmly shifts emphasis from helium to nitrogen and includes discussion on issues such as sources, physiology (the no-tell-tale death) & related lega practical issues" - March 2021 PPeH Update

I am not an expert, but I have read, and would encourage you to if you haven't, the 2025 PPeH and the Inert Gas Megathread here