Author Topic: Sanitizer question  (Read 1148 times)

Offline cfleisher

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Sanitizer question
« on: March 08, 2012, 05:58:14 PM »
How long can sanitizer stay 'potent' after it is mixed with water? Is there an expiration date on this stuff? I'm going to be a lot of beer stuff over a series of days and don't want to have to mix up a fresh bucket every time.
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Offline dbeechum

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Re: Sanitizer question
« Reply #1 on: March 08, 2012, 06:00:48 PM »
Depends upon which sanitizer and what sort of water.

Star-San / Saniclean - is good until it goes cloudy (which is an indication of a pH rise). Best life span you can get out of that stuff is by mixing it with distilled water and sealing it up in a container between uses.

Iodophor - basically when it loses color. Haven't really worked with it though.
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Offline dee

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Re: Sanitizer question
« Reply #2 on: March 08, 2012, 07:19:10 PM »
I keep my StarSan in a covered bucket or keg for weeks and have never had a contamination issue.  I always have some mixed in a clean keg to sanitize my thermometer probe and wine thief.  If you use distilled water, I'd suspect it could last for months.

Online kramerog

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Re: Sanitizer question
« Reply #3 on: March 08, 2012, 08:59:16 PM »
Depends upon which sanitizer and what sort of water.

Star-San / Saniclean - is good until it goes cloudy (which is an indication of a pH rise). Best life span you can get out of that stuff is by mixing it with distilled water and sealing it up in a container between uses.

Iodophor - basically when it loses color. Haven't really worked with it though.

If you have hard water, Star San will quickly become cloudy, but can still be effective.  I use it for making 1 batch of beer from brewing to packaging before I toss it out.
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Offline euge

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Re: Sanitizer question
« Reply #4 on: March 09, 2012, 12:53:23 AM »
I measure my starsan and RO water out. It has lasted in the spray bottle for years so far but about six months reuse in a bucket and it gets a bit dingy. Still works though. ;)

Now I make starsan solution by the half-gallon so I end up using it all in a few months.

Iodophor is one time use and more difficult. I don't like it.
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Offline ccfoo242

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Re: Sanitizer question
« Reply #5 on: March 09, 2012, 06:38:28 AM »
Interviews with Jon Herskovits of Five Star Chemicals:

Discussing cleaning: http://thebrewingnetwork.com/shows/Brew-Strong/Brew-Strong-11-10-08-Cleaning
Discussing sanitation: http://thebrewingnetwork.com/shows/469

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Offline mabrungard

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Re: Sanitizer question
« Reply #6 on: March 09, 2012, 07:07:08 AM »
This is the one case where softened water from a typical home softener is useful.  That water is nearly free of any calcium and it will not cloud when StarSan is added.  I mixed up a batch and put a glassful on my workbench, open.  It eventually dried up, but it never clouded.  RO water is excellent for StarSan use also since it has very low calcium.
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Re: Sanitizer question
« Reply #7 on: March 09, 2012, 07:30:33 AM »
I mix up 5 gallons of distilled water and Starsan in a bucket and keep it sealed between uses.  I only replace it when amount of "stuff" sitting on the bottom of the bucket starts to bother me.  It's lasts as least 6 months this way and often longer.  At the rate I've been using it, the bottle of concentrate I have will last longer than I will.

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Offline hopfenundmalz

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Re: Sanitizer question
« Reply #8 on: March 09, 2012, 07:34:05 AM »
Depends upon which sanitizer and what sort of water.

Star-San / Saniclean - is good until it goes cloudy (which is an indication of a pH rise). Best life span you can get out of that stuff is by mixing it with distilled water and sealing it up in a container between uses.

Iodophor - basically when it loses color. Haven't really worked with it though.

If you have hard water, Star San will quickly become cloudy, but can still be effective.  I use it for making 1 batch of beer from brewing to packaging before I toss it out.

The cloudy issue is with water with high alkalinity also, which results in raising the pH.  I know this to be true.  I now use RO water for my star san mix.
« Last Edit: March 09, 2012, 07:37:00 AM by hopfenundmalz »
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