Will This Helium Tank Do What I Need It To Do?

[herecomesthepain]

Does anyone know if this tank of helium is enough for me to CTB? The box says 100% helium, but from what I understand, some tanks are filled with 20% oxygen? Will this inhert gas be enough to get the job done? I plan on purchasing it from a store in Manitoba, Canada, unopened.

UPDATE: I contacted the company via their website, they have told me their "disposable tanks are 98% pure helium and not mixed with air."

But, I read somewhere that these kinds of tanks need at least 99% pure helium, so I am I out of luck with this product? Or is that 99% comment rubbish info?

Also, will this be enough helium to get the job done?

 

[Jadeith]

IF they are really 100% helium then it will do. If they are contaminated despite manufacturer's declaration - they won't. Easy to test - play chipmunk for a few breaths using only this. If it's good stuff, you'll feel dizzy very quickly. If it's contaminated, you'll breathe normally without side effects, except sounding funny.

 

[herecomesthepain]

IF they are really 100% helium then it will do. If they are contaminated despite manufacturer's declaration - they won't. Easy to test - play chipmunk for a few breaths using only this. If it's good stuff, you'll feel dizzy very quickly. If it's contaminated, you'll breathe normally without side effects, except sounding funny.

This is helpful, thank you so much! And potentially good news for my method!