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Date: 24 May 2006 10:32:52
From: Gerard Eberlein
Subject: how long will idophor last once mixed
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Does it go bad?, or can I keep a couple gallons mixed and ready for
emergencies, i.e. hooking up a blowoff tube really quick
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Date: 24 May 2006 14:37:58
From: Joel
Subject: Re: how long will idophor last once mixed
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Gerard Eberlein <dormouse@charter.net > wrote:
>Does it go bad?, or can I keep a couple gallons mixed and ready for
>emergencies, i.e. hooking up a blowoff tube really quick
Undiluted iodophor is very stable. Once diluted to
"working strength" it becomes much less so, especially
if subjected to heat, light, chlorine (which exists in
much US municipal water), etc. The rule of thumb is to
discard it roughly 24 hours after dilution, or any time
after the color begins to fade.
--
Joel Plutchak
"...illiterate Abyssinians did it for 5000 years, you can do it too."
- Guy Gregory on brewing beer
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Date: 24 May 2006 14:46:27
From: Gerard Eberlein
Subject: Re: how long will idophor last once mixed
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Hmmm. I was told to use luke warm water, which I just assumed would be
100-110 degree F water. Is this too hot for idophor?
"Joel" <plutchak@see.headers > wrote in message
news:e51r46$dtl$1@badger.ncsa.uiuc.edu...
> Gerard Eberlein <dormouse@charter.net> wrote:
> >Does it go bad?, or can I keep a couple gallons mixed and ready for
> >emergencies, i.e. hooking up a blowoff tube really quick
>
> Undiluted iodophor is very stable. Once diluted to
> "working strength" it becomes much less so, especially
> if subjected to heat, light, chlorine (which exists in
> much US municipal water), etc. The rule of thumb is to
> discard it roughly 24 hours after dilution, or any time
> after the color begins to fade.
> --
> Joel Plutchak
>
> "...illiterate Abyssinians did it for 5000 years, you can do it too."
> - Guy Gregory on brewing beer
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Date: 24 May 2006 11:53:06
From: Denny Conn
Subject: Re: how long will idophor last once mixed
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Gerard Eberlein wrote:
>
> Hmmm. I was told to use luke warm water, which I just assumed would be
> 100-110 degree F water. Is this too hot for idophor?
I think so. I know my bottle says to use cool water....
--------- >Denny
--
Life begins at 60 - 1.060, that is.
Reply to denny_at_projectoneaudio_dot_com
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Date: 25 May 2006 14:25:49
From: John 'Shaggy' Kolesar
Subject: Re: how long will idophor last once mixed
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On Wed, 24 May 2006 11:53:06 -0700, <me@privacy.net > wrote:
> Gerard Eberlein wrote:
>>
>> Hmmm. I was told to use luke warm water, which I just assumed would be
>> 100-110 degree F water. Is this too hot for idophor?
>
> I think so. I know my bottle says to use cool water....
I always use cold tap water.
John.
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Date: 24 May 2006 09:41:10
From: Denny Conn
Subject: Re: how long will idophor last once mixed
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Joel wrote:
> Undiluted iodophor is very stable. Once diluted to
> "working strength" it becomes much less so, especially
> if subjected to heat, light, chlorine (which exists in
> much US municipal water), etc. The rule of thumb is to
> discard it roughly 24 hours after dilution, or any time
> after the color begins to fade.
I frequently put iodophor into a corny for a week or so and reuse it. I
don't have chlorinated water, so no worries there. The corny protects
it from light, and it generally gets stored in a col place, so I guess
I'm OK there! I tested it once with one of the iodophor test strips and
after a week, it was still OK, so I guess it really depends on storage
conditions. Protein contamination is a deal killer, though....if you
toss stuff in that dirty with wort or grain, it breaks down quickly.
-------- >Denny
--
Life begins at 60 - 1.060, that is.
Reply to denny_at_projectoneaudio_dot_com
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Date: 25 May 2006 14:36:21
From: Joel
Subject: Re: how long will idophor last once mixed
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In article <44748CA6.46C86141@privacy.net >, Denny Conn <me@privacy.net> wrote:
>Joel wrote:
>> The rule of thumb is to discard it roughly 24 hours after dilution,
>> or any time after the color begins to fade.
>
>I frequently put iodophor into a corny for a week or so and reuse it. I
>don't have chlorinated water, so no worries there. The corny protects
>it from light, and it generally gets stored in a col place, so I guess
>I'm OK there! I tested it once with one of the iodophor test strips and
>after a week, it was still OK, so I guess it really depends on storage
>conditions.
I have to admit I've done the same thing, as recently as
last week. If I get interrupted while sanitizing kegs I
tend to do that. I do check the color first to make sure
it still looks good, and often add a small glurg for
insurance.
>Protein contamination is a deal killer, though....if you
>toss stuff in that dirty with wort or grain, it breaks down quickly.
Good point.
--
Joel Plutchak
"...illiterate Abyssinians did it for 5000 years, you can do it too."
- Guy Gregory on brewing beer
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Date: 25 May 2006 14:24:33
From: John 'Shaggy' Kolesar
Subject: Re: how long will idophor last once mixed
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On Wed, 24 May 2006 10:32:52 -0400, <dormouse@charter.net > wrote:
> Does it go bad?, or can I keep a couple gallons mixed and ready for
> emergencies, i.e. hooking up a blowoff tube really quick
The rule of thumb is that as long as it keeps it's color it is still effective
as a sanitizer. However, usually it will only last for a couple days.
IMO, just make some up when you need it.
John.
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