Author Topic: CO2 supply source and gas filtration  (Read 826 times)

Offline beerdoodle

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CO2 supply source and gas filtration
« on: July 08, 2016, 08:37:06 PM »
Alright, I'm fairly new to brewing. I have been doing extracts all spring and summer. My dad (brewing partner) and I are planning on going all-grain next spring, but FIRST we want kegs. We're currently bottling. I have a few questions for you.

First, where do you get CO2 filled? Do local homebrew shops do it? Gas supply store? We have a local welding service place that will fill them rather cheaply, but I'm not sure if there is a difference in gasses. Is there a "food grade" CO2, or is it all the same?

Secondly, is it common to filter CO2? I'm a little concerned about contaminates getting into my beer from the CO2, I know it can be a dirty gas. So, do any of you fellow homebrewers use air filters on your CO2 lines? They are pretty cheap so I'm thinking about getting one when I build my CO2 system. If you do, what specific filters are you using?

Lastly, (this may be better as it's own post) what is better, filtering beer between fermentation and keg, or using gelatin to get clarity? What are the main pros and cons of each? I can see starting out using gelatin and then adding proper filtration later on because it's cheaper. What will happen if I don't filter at all? Do I need to let it condition in a keg for a while? Will I have problems with sediment and yeast in the keg?

Thanks,
Seth

Offline narcout

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Re: CO2 supply source and gas filtration
« Reply #1 on: July 08, 2016, 10:13:19 PM »
First, where do you get CO2 filled? Do local homebrew shops do it? Gas supply store? We have a local welding service place that will fill them rather cheaply, but I'm not sure if there is a difference in gasses. Is there a "food grade" CO2, or is it all the same?

Some homebrew shops do fill CO2 tanks.  Otherwise, I would check and see if there is an Airgas store in your area. 

www.airgas.com

The tanks I get from Airgas have a sticker on them that say the CO2 is food grade.  Whether that really means anything, I don't know.

Secondly, is it common to filter CO2? I'm a little concerned about contaminates getting into my beer from the CO2, I know it can be a dirty gas.

They do make in-line CO2 filters: http://www.micromatic.com/filters/in-line-co2-purifier-770sg-l1300

I don't think they are commonly used by homebrewers.
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Offline denny

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Re: CO2 supply source and gas filtration
« Reply #2 on: July 08, 2016, 10:21:42 PM »
CO2 is CO2....I don't think I've ever seen food grade CO2 and I've been using it for 15 years.  I get mine filled (actually I swap) at a fire supply place.  In 15 years and many tanks, there's never been a hint of a problem.
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Offline duboman

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Re: CO2 supply source and gas filtration
« Reply #3 on: July 08, 2016, 10:41:11 PM »
I get my tanks swapped at a local welding supply shop, the first time I asked this question they laughed at me:) like Denny said co2 is co2.

That being said if a tank is poorly maintained there can be debris or corrosion in the tank but it's not the gas. This was explained to me when they stopped laughing :0

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Offline Philbrew

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Re: CO2 supply source and gas filtration
« Reply #4 on: July 09, 2016, 01:53:17 AM »
I also swap tanks out at the local welding supply.  There is a grade now where the co2 is supposed to be "inspected" (the mental visual of that is hilarious) for beer and soda use.  Of course, they add on a $4-$5 extra charge.
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Offline mainebrewer

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Re: CO2 supply source and gas filtration
« Reply #5 on: July 10, 2016, 11:32:02 AM »
I wonder how long it will be before some enterprising supplier starts selling "organic" CO2?
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Offline leejoreilly

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Re: CO2 supply source and gas filtration
« Reply #6 on: July 10, 2016, 12:34:59 PM »
I wonder how long it will be before some enterprising supplier starts selling "organic" CO2?

I'm not using it unless it's "artisanal", too.

Offline blair.streit

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Re: CO2 supply source and gas filtration
« Reply #7 on: July 13, 2016, 07:32:20 PM »
I wonder how long it will be before some enterprising supplier starts selling "organic" CO2?

I'm not using it unless it's "artisanal", too.
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Offline Joe Sr.

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Re: CO2 supply source and gas filtration
« Reply #8 on: July 14, 2016, 12:11:34 AM »
I use heirloom co2.


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