Also, if you enjoy BrewUnited, please consider doing your Amazon shopping via our affiliate link!
Posted 34 days ago.
Posted 34 days ago.
Posted 34 days ago.
So Olan, my purge calculation was for post filling the Keg, assuming you didn't do any type of CO2 purge prior to racking to the keg.
Posted 34 days ago.
So Olan, my purge calculation was for post filling the Keg, assuming you didn't do any type of CO2 purge prior to racking to the keg.
Posted 34 days ago.
Stupid double post :(
Posted 34 days ago.
Posted 34 days ago.
Posted 34 days ago.
Yea, I think that oxidation concerns are fairly mild on our scale, especially if you use some best practices on transfers (no splashing, etc). I find the purge after you fill it to give some good peace of mind given how easy it is and how little CO2 it uses. Especially since that is the atmosphere your beer is going to sit in for as long as the keg lasts.
Posted 34 days ago.
Posted 34 days ago.
Olan, hop aroma/flavor loss is due to oxidation. I've said it before and I'll say it again. Oxidation doesn't just mean cardboard/stale. There are hundreds, thousands, maybe millions of different oxidation reactions that can happen in beer. Some can even be desirable, especially in certain styles. Most of them are undesirable though, but the effects are not always obvious.
If you do the star San fill and push out with co2, I see no reason you can't rack with an autosiphon into the liquid post with the purge valve open. That would virtually eliminate any o2 in the keg when racking. I think the turbulence on the surface of the beer in the receiving vessel is probably where most oxygen pickup occurs during racking. Residual O2 is probably a bigger overall concern, so pressurizing and purging the headspace several times sounds like a great solution.
Posted 34 days ago.
Posted 34 days ago.
April,
Posted 34 days ago.
Hey Necro, that whole CO2 blanket thing you see people talking about is a complete and utter misnomer. Diffusion of gasses is governed by concentration gradients. If you're curious, you can read about Fick's law of diffusion. The gist of it is: closed systems like to reach equilibrium. Concentration gradients (i.e. pure CO2 above air), provide a motive force for the gasses to mix and create an equilibrium mixture.
Posted 34 days ago.