Welcome to the homeBBBrew board!
Like the BBB, the homeBBBrew board is not a club, just a place to talk about making beer. Is there a swap you would like to see happen? If we can find a few others who have something similar then lets do it!

NO SPECIFIC REASON FOR THIS LINK...
I just really like the work levifunk is doing!

PASSWORD PROTECTION: READ THIS BEFORE POSTING!
YOUR BBB USERNAME AND PASSWORD WILL NOT WORK ON THIS BOARD! If you want to post, you need to read this.

HomeBBBrewBoard
HotLinks!
Brettanomyces Brewing
E-Symposium Transcript!

Trouble making Trappists?
Discover Liquid Candy Syrup!
See what color impact to expect from liquid candy.

Search for:
Page:  1 2
Author Replies
BPotts
11/08/07 05:47 PM  
Preventing airlock suction from drop in air pressu
Anybody have any good methods of avoiding suction of the sanitized water from air lock into carboy from drop in air pressure? The heat isn't working where I ferment my beer right now, and it's getting quite cold here in the northeast. There's already been some drips of sanitized water into one of my beers and I don't want anymore!
JoeFleischman
11/08/07 05:55 PM  
Re: Preventing airlock suction from drop in air pr
You may want to try the older type S-Locks a try and fill 'em half way up.
Ryan
11/08/07 06:08 PM  
Re: Preventing airlock suction from drop in air pr
Where you at BPotts?

Ross
11/08/07 06:28 PM  
Re: Preventing airlock suction from drop in air pr
I've been wondering what folks do about this and was never satisfied with their explanations so I came up with a method that works well for me:

First thing is don't put an airlock ON the fermenter and avoid the problem altogether. Here's what you'll need.

Get two of the orange carboy caps with their little white plastic caps. If your fermenter is the 6.5 gallon carboy, get two maroon carboy caps.

One 2000ml erlenmeyer flask if using the orange caps. If using the maroon caps, get a 1000ml erlenmeyer flask.

Two feet of 1/4" I.D tubing. I use silicone tubing exclusively. Put a hose clamp on the tubing about half way up but DO NOT CLOSE IT!!

Two 1/4" - 1/4" barbed hose adapters.

An airlock.

Here's the setup:

Once the brew is in your carboy and all of the above hardware is sanitized, affix one of the carboy caps to the carboy neck opening. The other carboy cap goes on the erlenmeyer flask.

Install the two 1/4" hose barb adaptors in each of the carboy caps' smaller openings.

Install the airlock in the erlenmeyer flasks' carboy cap large opening.

Connect the two feet of tubing to each 1/4" barb on each vessel.

Make sure to put one of those little white caps on your brews' carboy cap large opening.

Once the brew is done fermenting, close the hose clamp and remove the erlenmeyer flask set up. That way, you can move the carboy around without fear of pulling in air/bacteria through the tubing.

By using this remote vessel setup, I've completely eliminated the problem of vacuum pulling in sanitizing solution, vodka whatever.

To be fair, I know a guy who wins medals all over the place who just uses vodka in his airlock. He doesn't care if a little drips back into his brew but it drove me crazy until I came up with this method.

BPotts
11/08/07 09:34 PM  
Re: Preventing airlock suction from drop in air pr
I've read about the s-locks but I'm looking for more of an immediate solution, if there is one.

Ryan - I'm in Philly....not super cold here yet but enough to condense my brews.

Ross - That's a creative way of dealing with the problem....I'll look into that for the future.

I really should be using vodka during these temp transitions...I always forget about it. I haven't ever had enough sani-water sucked through to effect flavor or anything...I suppose it's arguably less than probably gets mixed in from sanitizing the bucket in the first place... but for peace of mind, ya know. I'd feel better knowing it was some cheap vodka and not a chemical - even if sometimes it's hard to tell the difference!

Baums
11/09/07 11:13 AM  
Re: Preventing airlock suction from drop in air pr
Just use vodka or even star san in the airlock. I think you have to put a LOT of star san in the beer before it matters.
BPotts
11/09/07 12:32 PM  
Re: Preventing airlock suction from drop in air pr
I've been using one-step, which is similar, i think...
Baums
11/09/07 02:02 PM  
Re: Preventing airlock suction from drop in air pr
I am much less sure about the amount of one-step that can get into the beer before you notice a difference...
ErikH
11/10/07 01:15 PM  
Re: Preventing airlock suction from drop in air pr
a simpler version of Ross' solution is just to use a carboy cap, put a cover on one hole and run a blow-off tube into a container of water, no?
Ross
11/10/07 01:44 PM  
Re: Preventing airlock suction from drop in air pr
No. Vacuum can suck the water up the hose and into the fermenter. Been there.
BPotts
11/10/07 01:49 PM  
Re: Preventing airlock suction from drop in air pr
I have used a blow off tube for that reason before, and it has sucked up but not all the way, but provided a large enough drop in pressure it would reach the top. And if you don't detach the tube from the opening out of the top before taking it out of the water, as Ross said, vacuum sucks it right in.
BPotts
11/29/07 10:09 PM  
Re: Preventing airlock suction from drop in air pr
Finally have the perfect solution! My LHBS just got in silicone stoppers that have a one way valve and don't require liquid. Anybody used these before?
Ross
11/29/07 10:41 PM  
Re: Preventing airlock suction from drop in air pr
I ordered one, examined it and threw it away.

Baums
11/30/07 10:08 AM  
Re: Preventing airlock suction from drop in air pr
When 1 mL of vodka sucks back into 5G of beer it will change the alcohol content by 0.003%.

When a few mL of star san sucks back into 5G beer, as far as I can tell (many batches) nothing happens.

troy
11/30/07 10:49 AM  
Re: Preventing airlock suction from drop in air pr
Just put some aluminum foil over the top of the carboy.
BPotts
11/30/07 07:15 PM  
Re: Preventing airlock suction from drop in air pr
Ross.....really you threw it away? how come?

Baums, I know it doesn't effect the brew really but again it comes down to peace of mind....just saw this new product advertised and thought it sounded like the perfect solution ( no pun intended)

Troy, how will that help?

Howie
11/30/07 07:57 PM  
Re: Preventing airlock suction from drop in air pr
I have had the same experience. It can not be helped when the temp drops. So I started using cheap vodka. It keeps things sanitary and will not affect the beer that much and then in a good way. I use Kamchatka 80 proof.
Ross
11/30/07 08:12 PM  
Re: Preventing airlock suction from drop in air pr
I threw it away because I did not trust that it would seal out oxygen. That weird little insert doesn't look very reliable to me.
MarkM
11/30/07 08:43 PM  
Re: Preventing airlock suction from drop in air pr
I've used cheap vodka for years. Works for me and at $9 / 1.75 liter will last me several years.

My homebrew club did a tasting mixing straight star san with beer. We tested using a light ale (either a blond or cream. I don't remember specific numbers, but the end result was the portion of star san that had to be in the mix before it was detected was very, very high. Dumping your entire air lock into a batch would be only a tiny, tiny fraction of what we used.

Either of those options should be fine. So long as you stay away from chlorine or iodine solutions, I'd think you are relatively safe.

BPotts
12/01/07 01:09 AM  
Re: Preventing airlock suction from drop in air pr
Ross - I see, haven't actually seen it in person, just read they have them in the newsletter and it sounded great.

Mark....I always use onestep in my airlocks. I was unsure about how that particular cleanser might affect the brew. Baums also affirmed that.

But.... I just looked up onestep and found this:

"How is One Step environmentally sound?

One Step is a unique substance which consists of oxygen entrained with a mineral crystal. When added to water, this crystal dissolves and releases the oxygen in such a way to form hydrogen peroxide. The hydrogen peroxide does its work and degrades into oxygen and water, leaving only the minerals behind. Those minerals are naturally occuring compounds in the environment and are quite stable-- in fact, you probably have appreciable amounts of them in the tap water you drink.

How can a no-rinse cleanser like One Step not affect beer flavor?

There is a very low level of solid material in a One Step solution (1 Tbsp. per gallon is not much!). Once bottles or equipment have been rinsed, the solution easily drains off, leaving very little solution behind-- which has very little solids. Even those solids that may be left are the same types of minerals which you would be leaving behind if you were to go ahead and rinse with tap water. (Not to mention the fact that a lot of the mineral content of the One Step solution is the same as that responsible for the excellent water of Burton-on-Trent brews!)"

Looks like it's nothing to worry about....

Sweasty
12/01/07 09:27 AM  
Re: Preventing airlock suction from drop in air pr
I gave up on airlocks ages ago. I just use sanitized aluminum foil to cover the carboy. Sure you don't get to see your airlock bubbling away, but thats not that big of a deal.
troy
12/01/07 10:31 AM  
Re: Preventing airlock suction from drop in air pr
The aluminum foil should be enough to keep any unwanted bugs out of the carboy. I don't use the airlocks much anymore.
troy
12/01/07 10:34 AM  
Re: Preventing airlock suction from drop in air pr
I also think that an airlock without any liquid would be a pretty effective deterrent against unwanted bugs. From what I understand, they require moving air to get around, and they cannot crawl around or up into things.
BPotts
12/01/07 12:00 PM  
Re: Preventing airlock suction from drop in air pr
You just put tinfoil right over the top of the carboy and that's all? Huh, and no issues with that at all? Even though there's no clear air movement I would still think air has to be passing under that....
Ross
12/01/07 01:43 PM  
Re: Preventing airlock suction from drop in air pr
Bacteria hitches a ride on dust particles. I'd be more concerned with oxidation.
Baums
12/03/07 12:02 PM  
Re: Preventing airlock suction from drop in air pr
I'm going to start messing with foil closures as well, set up in such a way that a lot of gas can exchange (oxygen in, CO2 out). I agree oxidation is a concern once the head drops, and at that point I'd put on an airlock.
Ross
12/03/07 12:56 PM  
Re: Preventing airlock suction from drop in air pr
I've heard experienced brewers say the flavor difference; airlock vs no airlock is minute.
BPotts
12/03/07 02:19 PM  
Re: Preventing airlock suction from drop in air pr
For the entire fermentation?
Ross
12/03/07 02:50 PM  
Re: Preventing airlock suction from drop in air pr
Not using an airlock for the first aggessive stage of fermentation then placing an airlock on the fermenter later supposedly makes very little difference. You may gain a percentage point of attenuation and the ester profile may be minutely different. It's not a make or break technique regarding fermentation performance.
BPotts
12/03/07 07:45 PM  
Re: Preventing airlock suction from drop in air pr
Ok... I thought you might have meant for the whole time....
MarkM
12/03/07 10:14 PM  
Re: Preventing airlock suction from drop in air pr
I actually know the guy that invented one-step. It isn't officially listed as a sanitizer, just a cleaner, because the testing required to get that listing was pretty pricey. He always said he was comfortable using it in his brewing (he's a homebrewer too) and was certain it would pass the sanitizer test if he ever was willing to pony up the cash.
  Page:  1 2
Return to Forum

Post a Reply
Your Name:
Subject:
Message Body:


 
   
Username

Password

Around Bruges in 80 Beers: 2nd Edition

Around London in 80 Beers

Around Brussels in 80 Beers


Babblebelt contributors in attendance: