[Bio] pH probe confusion

Otute Akiti oakiti at gmail.com
Thu Apr 14 17:15:40 PDT 2011


You should probably keep the probe in water for now. We can refill with KCl
later.
It looks like KCl is not too difficult to obtain in solid form. Then we'll
have to the appropriate solution for the electrode - typically it is a 3M
solution.

Here is a link for the pH of vinegar and other stuff:

http://www.apple-cider-vinegar-benefits.com/properties-of-vinegar.html

-Otute


On Thu, Apr 14, 2011 at 4:08 PM, Rolf <rolfvw at gmail.com> wrote:

> Hi there Bio people,
>
> I just got this aquarium style pH probe.
> When it arrived, it had a lot of dried stuff all over it, like some
> kind of white powder.
> Then I realized that this was the KCL electrolyte that was supposed to
> stay in the little container that mounts on the end of the probe.
> Most of the liquid drained out of this container during shipping, although
> it doesn't appear that the membrane dried out.
>
> I have no experience with these things...
> Is the probe ruined?
>
> Also, does anyone know the pH of vinegar?  (the only thing I could
> think of for testing!)
>
> -rolf
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