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Contents:
  Re: sanitiser getting old (Starsan) (Calvin Perilloux)


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Date: Mon, 1 Dec 2008 11:20:15 -0800 (PST)
From: Calvin Perilloux <calvinperilloux at yahoo.com>
Subject: Re: sanitiser getting old (Starsan)

Keith asks about sanitizer getting old:

> Looking at my sanatizers, I notice the Iodopher looks 
> like it still has iodine in it and the Starsan is brown 

Brown?!?  That doesn't sound like Starsan, or at least 
not mixed, ready-to-use Starsan.  Are you talking about 
the pre-mix concentrate?  The detergent portion of Starsan 
can vary some what in color, if I remember correctly, 
though I myself have never found it to be darker than 
yellowish, certainly nothing like the darker Saniclean, 
which is a not-too-disimilar formulation.

> BTW, I am blind and do not know the original color 
> of these sanatizers.

Eh?  I guess you asked someone about the current color?
Starsan should have been very pale yellowish when new.
I have kept Starsan in the concentrate form for two years
or more at room temperature with no change in color. 

> Is it better to add sanitizer to RO water or tap water? 

For Starsan it is better to use RO water.  Hard tap water
can cause minerals to form "soaps" with the sanitizer
components, thus reducing its effectiveness.  The cloudy
look that you get with Starsan in hard water is a symptom
of this.  Give it long enough (or hard enough water),
you can lose the sanitation effect. 

With Starsan, according to the manufacturer, so long as
the pH is 3.0 or below, it's effective.  If you have really
hard water and just want to be sure, then mix your Starsan
solution using RO water, and it can last indefinitely.

Calvin Perilloux
Middletown, Maryland, USA



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