Bogie
Contributor
How long is it safe to store air in your scuba tanks safely without resupplying with fresh air?
I personally would not use air that was over 60 days. (just my preference)
How does Oxygen content degrade in stored scuba tanks? You start with an air fill with the normal 21% Oxygen. If you store a full tank for 3,6, or 12 months does the Oxygen content decrease? What if stored longer 2, 3, 5 years? Does temperature, moisture, or other factors contribute? What about type and physical make up (steel, AL, composite) of the tank? Are there other factors (rust, organic growth etc.) that can make the air unsafe?
Do the other gases of air in the tank change concentration? (Nitrogen, carbon dioxide, argon)
Are there any scientific studies on this?
I personally would not use air that was over 60 days. (just my preference)
How does Oxygen content degrade in stored scuba tanks? You start with an air fill with the normal 21% Oxygen. If you store a full tank for 3,6, or 12 months does the Oxygen content decrease? What if stored longer 2, 3, 5 years? Does temperature, moisture, or other factors contribute? What about type and physical make up (steel, AL, composite) of the tank? Are there other factors (rust, organic growth etc.) that can make the air unsafe?
Do the other gases of air in the tank change concentration? (Nitrogen, carbon dioxide, argon)
Are there any scientific studies on this?