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Old 03-15-2007, 11:44 PM   #1
Dec 2006
Posts: 247

I picked up 4 of these;


carboys for free today and am trying to think of how i can use them as beer fermentors.

Is polypropalene ok to brew beer in??

It has a screw top. Should I drill a hole in the screw top and then fit a blow off tube into the hole,silicon seal it and be good to go?

Should I buy a #13 1/2 stopper and drill a hole in if for a airlock?

Should I use it as a primarly or secondary? I have only one glass 6.5 carboy of my own other then these.

I really appreciate any words of advice from those out there in the know.

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Old 03-15-2007, 11:47 PM   #2
krispy d
Mar 2007
Old Saybrook CT
Posts: 609
Liked 5 Times on 5 Posts

I can't think of any reason not to ferment in one of those. but I'm no expert.

as for the blow off
Accepts No. 13-1/2 rubber stopper.

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Old 03-16-2007, 12:11 AM   #3
The Dude
Dec 2006
Lakeland, FL
Posts: 35

I was gonna say they seem pretty expensive but I didnt read where you got them for free.

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Old 03-16-2007, 12:31 AM   #4
Don't let your meat loaf.
Gambrinus's Avatar
Feb 2007
Osky, IA
Posts: 82

Which size did you get? I am thinking 13 gallons of brew at a time would rock!!

If they're good to go for fermenting.
It's not enough to do your best, you have to first know what to do, then do your best.
W. Edwards Deming

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Old 03-16-2007, 12:41 AM   #5
Yeast Infection
Feb 2007
Boulder, CO
Posts: 204

I have the smallest one, got it for free from where i work b/c someone order an extra one by accident...never really thought to brew in it....but it could be cool for a small 2 gallon "test batch."
it says it meets FDA standards...but what does that mean in terms of brewing....probably nothing. it will go great with the 4 new Better Bottles that will be arriving in my hands the end of this month.

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Old 03-16-2007, 12:52 AM   #6

From what I understand polypropylene is not very good for keeping oxygen out.

Since its free, you might try it out, see what happens. If your beer tastes like cardboard you know not to use it for this.

If that's the case you have a good container for mixing/storing cleaners or sanitizers.

My guess for short term use its ok. I would not use it for long term ferments like lagers, wines or meads.

If you really want to go plastic, PET is the best route. Look at the soda bottles or the plastic beer bottles. They are all PET. You can ID the PET with a triangle shaped recycle symbol with a 1 in the center. You can also find a PET or PETE marking nearby. I have 4 PET 3 gal water bottles that make for excellent mini fermentors ($4.99 each w/ water). Its just a matter of time before we start seeing these in 5 gal sizes.

I would also cart your bottle into the LHBS and try fitting it with a carboy cap before using a plug.

Good Luck
Success is getting what you want. Happiness is wanting what you get. - Dale Carnegie

On Tap; Special Export, Spring SmaSH Summit, House Amber.

BS Nano-Brewery

|Myeast 50327|Easy Hop Oast|Smoked Homebrew|

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