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Old 03-02-2012, 07:48 PM   #1
Zywo
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Default Filtering my Beer

Hey everyone,

So I'm a chemist which leads me to believe that the only way to filter something is with a big ass filter paper and funnel. I think if I pass my beer through filter paper into the bottling bucket that this might be a good way to filter it, BUT, I was curious if I could filter out all the yeast as well and then not get carbonation in my bottles...is this a concern or are yeast way too small to get caught up in filter paper??

Thanks,

David

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Old 03-02-2012, 07:58 PM   #2
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Howdy, I am also a chemist. I would think I you use a fairly porous paper like a Whatman no. 4 you shouldn't have an issue getting most of your yeast through the paper. You probably would want to use ashless paper as well to reduce the chance of getting anything from the filter into your brew. Of course I am also speaking as a chemist and not a brewer I am sure the is a more efficient way to filter.

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Old 03-02-2012, 08:03 PM   #3
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I use a fine mesh strainer to pour the wort & top off water into primary. That gets out hops & grainy small stuff just fine. But not the real fine floury stuff. Given time,the beer will settle out clear or slightly misty in primary. Filtering aftarward might oxygenate it.
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Old 03-02-2012, 08:15 PM   #4
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Unionrdr,

Good point about the oxygenation, didn't think about that...perhaps a mesh screen around the end of the racking cane will work, that shouldn't oxygenate it much but would still filter...?

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Old 01-22-2015, 04:33 PM   #5
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I'd be interested to find if anyone has gone this route ever since this discussion? I can't afford a filtration system since I'm not CO2 capable yet, but goddamn, my dry hopping is ****ing cloudy and vegetal. Anymore thoughts?

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Old 01-22-2015, 04:40 PM   #6
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Dry hopping isn't the same as boiling the hop oils into the beer. It does cause some cloudiness from the hop oils mingling with the beer slowly vs boiling. They don't mix in the same way, so you get more arma, but not clear like late boil hopping.

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Old 01-22-2015, 05:35 PM   #7
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If your dry-hopping is vegetal:
1. How much dry hopping?
2. What form, leaf or pellet?
3. How long?

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Old 01-22-2015, 05:40 PM   #8
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I don't dryhop everything, but when I do, I dryhop for a week, then cold crash for a week or so, sometimes with gelatin. Results= clear beer. And I didn't even stay in a Holiday Inn Express last night.

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Old 01-22-2015, 05:51 PM   #9
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Cold crashing is easy, no filter worries, no extra o2 to worry about. My beers come out clear enough to read the label on the glass thru the beer.

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Old 01-22-2015, 06:08 PM   #10
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Quote:
Originally Posted by Zywo View Post
Hey everyone,

So I'm a chemist which leads me to believe that the only way to filter something is with a big ass filter paper and funnel. I think if I pass my beer through filter paper into the bottling bucket that this might be a good way to filter it, BUT, I was curious if I could filter out all the yeast as well and then not get carbonation in my bottles...is this a concern or are yeast way too small to get caught up in filter paper??

Thanks,

David
What level of filtration are you aiming for? If you are looking to keep yeast rafts, trub, and hop gunk out, then I think a mesh bag around your siphon/racking cane will work fine (that's what I do). If you want to get your beer sparkling clear you'll need to use a plate filter and use CO2 to push it through. You won't be filtering out the yeast in suspension and can still bottle carbonate unless you start getting down into the .5-1 micron size filters.
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