How long does it take for beer to lose all of its residual co2 after fermentation?

Discussion in 'Homebrewing' started by 7ate9, Jan 25, 2013.

  1. 7ate9

    7ate9 Savant (285) Virginia Apr 26, 2007

    I have an old ale I plan on leaving in secondary for a long period of time. I'd like to replace the airlock with a solid bung eventually but I don't want my carboy to explode, or more likely for the bung to shoot out unnoticed and leave my beer bungless. How many months do I have to wait for the residual co2 to come out of solution enough that it is safe to put a solid bung in my carboy?

  2. A long time. Months.

    Even with the absence of dissolved CO2 temperature changes can cause pressure to build and pop out a solid bung.

    There is no reason to avoid using an airlock. The S type airlocks lose liquid very slowly and only need to be refilled every couple months at most. You can really fill the chambers full since there's little fear of too much pressure against that much liquid. That will help keep it filled for longer.
  3. I like using tinfoil as Nathan Smith does.
  4. Not a good idea for aging. Great for primary.
  5. why?? Allows oxygen to leak in?
  6. 7ate9

    7ate9 Savant (285) Virginia Apr 26, 2007

    thanks all!
    I'll just leave the airlock in.
  7. Yes.
  8. That makes sense. Thanks.