How to avoid beer contacting oxygen during dry hopping (carboy)?

[Snuffy]

Why not drill / use the other hole in a carboy lid put a CO2 line in that and let CO2 in slowly, then you can force the hop pellet in against the flow of CO2 exiting. If you get bored and you have the flow balanced the hop pellet will hover in mid air like an executive toy!

I would recommend eye protection for pressurized applications.

 

[cfjcarl]

I had no idea someone on here had already tried this. I'm glad to hear it was successful. I plan to try it next time I dry hop. My plan was put a large washer in a small zip bag and put it inside the small muslin bag containing the hops. I plan to use one of these magnets on the outside of the carboy. I tested it and it works great. https://www.amazon.com/gp/product/B07QX3HTKD/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=

[Edit: Moved reply outside quoted text -Mod]
So if you have the hoppes in the fermenter while its feementing and lets say your able to keep it from getting wet. What prevents it from releasing all the aromatics out the air lock?

 

[DarrellQ]

Good question. Maybe pressure? I haven't tried that process yet, but I will say, I just did a recipe that I have done many times without dry hopping, and this time, I dry hopped for the last 3 days before kegging. I opened the carboy while pumping in some Co2, and I tossed in 2 oz of Cascade hops. I can honestly say that I don't see any hops flavor or aromatic difference between this brew and what I haven't dry hopped in the past. So, I'm not a big fan of dry hopping at this point.

 

[IslandLizard]

I opened the carboy while pumping in some Co2, and I tossed in 2 oz of Cascade hops.

That's a decent process actually! The carboy neck is narrow, streaming CO2 into the headspace through a piece of tubing while adding the dry hops counterstream.
Although gases mix freely, there is less chance oxygen moves in while CO2 is moving out, especially during the 1-3 minutes or so it takes.

I use a similar procedure with my bucket fermenters, and drilled an "accessory port," a 1" hole in the lid for adding dry hops or other things while streaming CO2 in through the airlock hole. I can even purge that headspace a few times afterward, as my bucket lids seem to seal pretty gas tight, they bulge under pressure.

 

[DuncB]

Glad to hear the CO2 into buckets and carboys works just an idea I had but not had to try.

 

[cfjcarl]

I tried pumping CO2 into my clonical fermenter as i poured in the dry hops. Time will telll.