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Old 10-28-2012, 02:53 AM   #1
Sep 2012
Posts: 95

Does anyone know A- how long sanitizer lasts and B- what's the best way to store it ? Also how do I know if its too old and won't do the job ? I don't want to have to mix up a new batch every time I want to brew or test or bottle.

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Old 10-28-2012, 03:03 AM   #2
Apr 2011
Atascadero, Ca
Posts: 1,108
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Is it Starsan or iphodor? If its iphodor it's one time use if its Starsan it is good until the Ph level drops to a certain level, I don't remember it at the moment. I switched to Starsan and I keep it in a 5 gallon bucket and switch it every few months. There is a YouTube video that Immolatious did over a several month period showing how long it can keep. Check out this video on YouTube:<br/><br/>

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Old 10-28-2012, 03:04 AM   #3
Mar 2011
Richmond, VA
Posts: 514
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meh i bought a 32 oz (at least i think its 32 oz) over a year ago, and it isn't even half done. i don't brew that often, but frequently will mix up 2.5 gallons (.5 oz star san), or even less.

point being it lasts a loooong time, and isn't that expensive.

i have heard that people will store it in sealed buckets, and something about it going clear means its not good enough anymore?? pH checking i think is the better way to check if it is still good.

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Old 10-28-2012, 03:07 AM   #4
bad67z's Avatar
Feb 2009
Columbus, Ohio
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A: as long as it is < 3.0 ph, made with tap water it tends to get cloudy as it looses it's effectiveness.
B: I use a 5 gallon plastic water jug. If you use distilled water it lasts almost indefinitely.
C: I also would recommend a cheep spray bottle, it is handy to have around full of Starsan.

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Old 10-28-2012, 01:27 PM   #5
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Feb 2011
Sheffield, Ohio
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Craigtube did a video on starsan. He had some in a jug that'd gone cloudy,mixed up a new one with same water,same amount of water/starsan. Both tested below 3.0ph. So cloudy doesn't equal ineffective. I even use a funnel & coffee filter to filter mine out every so often. Less cloudy & lasts a long time. I have an 8oz bottle I bought early last year that has maybe .5" gone out of it.
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Old 10-29-2012, 02:50 AM   #6
Sep 2011
Lakeway, Texas
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I'm curious how long it can be used.
I typically make up ~4 gallons of it, and because I typically brew ~3 beers a month I have been keeping it in a covered bucket and using it for maybe a month w/o any problems, but I have no idea how long it would last when sanitizing clean stuff.
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...tasting a beer at 1 week, and again at 2....that to me just means there 2 less beers that are actually tasting good and are ready at the end.
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Old 10-29-2012, 03:05 AM   #7
Oct 2012
, Illinois
Posts: 30
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There are a few podcasts that feature Charlie Talley of 5star chemicals (makers of Star-San). He says 3.5 or below for PH and not cloudy.

Apparently, Star-san reacts with minerals in tap water and when it turns cloudy it is no longer effective.

Link below references the podcasts.

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Old 10-29-2012, 05:03 AM   #8
Dec 2009
Galloway, OH
Posts: 311
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The cloudy myth has been debunked a number of times. Mine turns cloudy the second I make it. As long as you are below the recommended pH you are fine.

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Old 10-29-2012, 05:08 AM   #9
Jul 2012
Nelson, Bc
Posts: 537
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With regard to iodophor, it does lose effectiveness over time but according to my reading if it still has a brownish color in the proper dilution, it is good. When it loses the color it has lost it's sanitizing power. On a related note, it is important to use the proper dilution, which is about 1cc of iodophor in 1 liter of water.

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Old 10-29-2012, 12:53 PM   #10
Dec 2011
Bristow, VA
Posts: 154
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Originally Posted by Breck09 View Post
The cloudy myth has been debunked a number of times. Mine turns cloudy the second I make it. As long as you are below the recommended pH you are fine.
That is the truth. Mine comes out cloudy from the word go but I haven't had a problem with it yet. Personally I toss mine at the end of every function that requires sanitation so I don't know how long it keeps for me. 1 oz. (5 gallon dose) is $0.52. I'd rather use fresh Star San and be sure then possibly ruin $30 or more in beer because I didn't want to spend $0.52
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