[pure-silver] Re: Speaking Of HC-110
- From: Steve Goldstein <sgold@xxxxxxxxxxxx>
- To: "pure-silver@xxxxxxxxxxxxx" <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 25 Mar 2014 11:33:33 -0400
Yes, the HDPE bottles used for concentrate are slightly oxygen-permeable,
but my understanding is that the long life of HC-110 concentrate arises
because it contains no water. Stock solutions mixed from concentrate have
a much shorter life. This has led many (including me) to mix working
solutions directly from concentrate, using syringes to measure out the
required small volumes of concentrate.
I sometimes, but not religiously, move the concentrate to smaller glass
bottles to reduce the amount of air trapped in the bottle.
Steve
On Mon, Mar 24, 2014 at 1:03 PM, Joseph O'Neil <joneil@xxxxxxxx> wrote:
> Hi everyone;
> I have several old bottles of HC-110, maybe some ten years old, never
> opened, and in the concentrate, never an issue with them or developing
> times. One reason I love the stuff - seems to last almost forever in it's
> pure form.
>
> good luck
> joe
>
>
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