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Old 10-04-2011, 11:56 PM   #1
Chefencore
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Default Pre-made sanitation solution

If I filled a keg with clean, unused sanitizer, how long would it stay useful? I use starsan, and often find myself using just small amounts of sanitizer.

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Old 10-05-2011, 12:36 AM   #2
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A long time. You can use ph strips or a ph meter to determine when it's reached the end of it's life but I read alot about folks filling a bucket with starsan soln, sealing it, and using it time after time... A sealed keg would be even better.

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Old 10-05-2011, 12:42 AM   #3
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Quote:
Originally Posted by jaycount View Post
A long time. You can use ph strips or a ph meter to determine when it's reached the end of it's life but I read alot about folks filling a bucket with starsan soln, sealing it, and using it time after time... A sealed keg would be even better.
+1

I keep a carboy loaded with Star-San solution and use it repeatedly, dumping it into my sanitation bucket for brew days, racking days, kegging days, etc. I test it each time to make sure it's still hanging in around pH = ~3 and as long as it's still viable I reload the carboy and cork it until the next use...

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Old 10-05-2011, 02:53 AM   #4
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Star-San prepared with distilled water basically will last indefinitely, so long as you don't introduce much organic matter. I used the last batch of star san for a year or two, and only dumped it because I left my beer gun "open" as I connected it to the keg.

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Old 10-05-2011, 03:27 AM   #5
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it does depend on the water used to mix it up....very hard water will turn cloudy quickly, and won't last as long.

but soft or distilled water will last almost indefinitly

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