Ziplock bags for yeast harvesting

Wed Mar 04, 2009 8:37 am

Chris Frey posted on tech talk a while back that he pours his yeast slurry into unopened ziplock bags. I emailed Ziplock and they said the insides are not sterile but are sanitary.Anyone ever do this? i dumped some WLP 002 slurry into a bag on Sunday and I'm hoping for the best.

Jason
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Re: Ziplock bags for yeast harvesting

Wed Mar 04, 2009 9:13 am

Well, that probably is good enough. Most of use just sanitize our equipment--we don't sterilize it. Oh, and I don't recommend trying to sterilize the bags in an autoclave.
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Re: Ziplock bags for yeast harvesting

Wed Mar 04, 2009 10:04 am

I use those bags all the time for covering my flask on the stir plate when making starters or over the top of carboys when I don't have an airlock handy. They are sanitary already, so I just dip the bag in some star san before using them around wort to kill any remaining bugs. If I don't have any star san in a bucket, I just spray some into the bag.

Wayne
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Re: Ziplock bags for yeast harvesting

Wed Mar 04, 2009 3:20 pm

Just recently I was at a homebrewing class at Brewmiester in Folsom and afterwards I was handed a baggie of Brett. I thought it was a little strange but aparently for short term storage there just fine.
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Re: Ziplock bags for yeast harvesting

Thu Mar 12, 2009 3:20 pm

I use a mason jar or a used tomato sauce jar. That way I can sterilize it and I don't have to worry about it getting punctured or falling open.
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