[Bio] pH probe confusion

Rolf rolfvw at gmail.com
Fri Apr 15 05:56:38 UTC 2011

Thanks, Otute.

Yes, I got some distilled water and refilled the container, and put
the probe back in there.
There was probably a bit of KCl still in there, so hopefully
that will be good enough for now.


On Thu, Apr 14, 2011 at 5:15 PM, Otute Akiti <oakiti at gmail.com> wrote:
> 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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