does air go bad?

[askdjasd]

I know air does go bad, but what's the expiry timeframe???

Havent dove with one of my tanks in 2 weeks, wondering if i should empty and refill?
its currently full.

 

[coldwaterlloyd]

It should be fine . If memory serves me well 3 months is the standard .

 

[rob1967]

No worries there, mate! Should be good for a year, as long as there is no water in your tank.

This topic comes up regularly on the "tanks" forum. For example, check out http://www.scubaboard.com/forums/tanks-valves-bands/354174-how-long-air-can-safe-inside-tank-2.html

 

[nadwidny]

Steel tanks with water inside can be bad. Air in aluminum tanks lasts basically forever.

 

[Sintax604]

The first used tanks that I bought had been stored full for 8 years. I was wild and reckless and decided to have a taste... perfectly normal.

I knew I shouldn't dive it but I bet it would have been fine - the tanks were pristine inside.

 

[Bob DBF]

I have an old 72 that I don't dive much to begin with, and I've gone a couple of years before using it on one occasion. I got a couple of tanks from a friend that sat unused for most of a hydro. Both times however, I know how the tanks were treated. I would think a bit before I used a random tank out of viz.


Bob
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You only need two tools in life – WD40 and Duct Tape. If it doesn’t move and should, use the WD40. If it shouldn’t move and does, use the Duct Tape