Newest Threads

**centralpabrewer** · 06-04-2011, 01:27 AM

Can oxygen go bad? I got a medical grade oxygen cylinder from where I used to work. No idea how long it has been there, probably longer than 10 years. Would this still be ok to oxygenate my wort?

thanks

**SD-SLIM** · 06-04-2011, 02:50 AM

Quote:

Originally Posted by centralpabrewer

Can oxygen go bad? I got a medical grade oxygen cylinder from where I used to work. No idea how long it has been there, probably longer than 10 years. Would this still be ok to oxygenate my wort?

thanks

I will tell you that hospitals put expiration dates on them...if the tank is steel, then steel rust's...rust will consume 02, but short of that it should last for a long time.

bovinejony · 06-04-2011, 07:25 AM

Quote:

Originally Posted by SD-SLIM

I will tell you that hospitals put expiration dates on them...if the tank is steel, then steel rust's...rust will consume 02, but short of that it should last for a long time.

Actually, rusting only occurs when both O2 and moisture is present. As long as the tank is properly sealed it should be pretty good to go. But if you are concerned just refill the tank with fresh gas for 3-4 bucks. Even if there is some contamination the O2 should be reasonably fine if you use it within a few months. Maybe try blowing some air out threw a paper towel or something to see if any fine dust/rust is coming out.

**centralpabrewer** · 06-04-2011, 10:56 AM

Didn't think to blow some oxygen out through a paper towel, will give that a try and see if it's clean. I was old that you need to have a perscription to have a medical oxygen tank filled. There is an Airgas local, but I don't think they refill on site.

Thanks for the suggestions.