- Nov 15, 2007
- Reaction score
Dry nitrogen works well also, I have used it for year’s.
How they separate has to do with molecular weight.
To a VERY VERY good approximation, they do NOT separate. The degree to which they separate is measured in about the 5th decimal place. That is, if you had a headspace that was 50% O2 and 50% Ar, the surface of the wine would see something like 49.995% O2 and 50.005% Ar.
It is useful to purge the headspace with Ar or N2 because you are diminishing the amount of O2 in the headspace. But there is no separation to any practical degree.
Yeah, I know that's long and I have never gone that log with any batch. But since the instruction for the FWK don't mention an airlock until after going to secondary, I thought I'd give it a try to see if there was any benefit other than saving one racking.Brian, 14 days on cheesecloth sounds long. I usually go to a sealed environment a couple of days after I put in the nutrient package. Something about stopping the oxy infiltration as the yeast moves into anaerobic fermentation. I let it sit in my primaries for at least a month, at that time I get little foaming when racking and adding the settling agents. I'm at 3 weeks right now and my Riesling & Muscato are the same color as when I started, a nice amber. But, they are in Spiedels, which being a thick, opaque plastic may tend to darken the apparent color. I'll know more in a couple of weeks when I move them to a clear carboy for settling.
@bstnh1 That particular section of the instructions was mentioned earlier in this thread (#917-919). @Matteo_Lahm responded about the wording causing some confusion and what the intent was.Yeah, I know that's long and I have never gone that log with any batch. But since the instruction for the FWK don't mention an airlock until after going to secondary, I thought I'd give it a try to see if there was any benefit other than saving one racking.
It depends on your primary vessel and how confident you are that it will hold its seal for the duration of EM.
That discussion was concerned with opening the fermenter to punch down skins. But what concerns me is that the instructions mention covering the fermenter opening with cheesecloth at the start, but never say to put it under airlock until after the wine's been racked and put into secondary. With the fast ferment that these kits are known for, I feel it's taking an unnecessary risk to let it go that long with just a permeable cover. As I mentioned earlier, when I racked my Chardonnay after 15 days, there was no sign of any gas - no foam, no minute bubbles and no action in the airlock after degassing.
What do you mean by "once you close it up? When do you "close it up"? I don't see that in the instructions.Good morning all,
Just to clarify, you can use cheese cloth or a lightly fit cover while fermentation is active. When it comes time to close up the container, remove any cloth and seal the bucket. Standard fermentation buckets come with a port for an airlock. You should use one during that 14 day period once you close it up. I will look at the instructions again. I thought that was clear but I will make necessary revisions if it isn’t. Once the bucket is closed, an airlock is necessary. You want to maintain a nice pressurized carbon dioxide environment to protect the wine. As we have already established, there is some mixing between oxygen and CO2 however, if that bucket is closed there won’t be and that’s what we recommend.
as always, your insights are appreciated and noted.
When you get to 1.01 SG, the instructions say to close the top of the primary fermentation bucket and leave it closed until the 15th day. Standard primary buckets have the top with the snaps and a hole to fit an airlock. I’m going to review that verbiage and revise it to make it more clear.
Thank you! I'm sure everyone on here really appreciates the way you review these posts and respond.When you get to 1.01 SG, the instructions say to close the top of the primary fermentation bucket and leave it closed until the 15th day. Standard primary buckets have the top with the snaps and a hole to fit an airlock. I’m going to review that verbiage and revise it to make it more clear.
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