My buddy works in a food testing facility and I'm looking for pH
electrode storing solution. In one of the cabinets in the lab he found a
bottle marked, "Electrode filling solution 4 Molar Potassium Chloride
Saturated with Silver Chloride".

Can I use this as an electrode storing solution? I know I need
potassium chloride but I don't know what the rest of the stuff is, like
silver chloride.

Thanks!

-Paul

see http://physchem.ox.ac.uk/MSDS/SI/silver_chloride.html
the spec sheet for silver chloride.

What does the maker recommend?

See some articles ifrom this search if you don't have the instructions
http://www.metacrawler.com/info.meta...g%252Bsolution


On Thu, 16 Oct 2003 19:08:24 GMT, "Paul S. Remington"
> wrote:

> My buddy works in a food testing facility and I'm looking for pH
>electrode storing solution. In one of the cabinets in the lab he found a
>bottle marked, "Electrode filling solution 4 Molar Potassium Chloride
>Saturated with Silver Chloride".
>
> Can I use this as an electrode storing solution? I know I need
>potassium chloride but I don't know what the rest of the stuff is, like
>silver chloride.
>
> Thanks!
>
> -Paul
>
>

Best case, it would depend on what kind of probe you have. If your
probe contains the same type of solution it might be fine, but if not,
I doubt it would be a good idea!

Many people say that 7.0 buffer (calibration) soln is the next best
thing -- I would use that until I can get my hands on some proper
storage soln.

Richard

"Paul S. Remington" > wrote in message >.. .
> My buddy works in a food testing facility and I'm looking for pH
> electrode storing solution. In one of the cabinets in the lab he found a
> bottle marked, "Electrode filling solution 4 Molar Potassium Chloride
> Saturated with Silver Chloride".
>
> Can I use this as an electrode storing solution? I know I need
> potassium chloride but I don't know what the rest of the stuff is, like
> silver chloride.
>
> Thanks!
>
> -Paul

Thanks Richard, et. al.,

This is confusing... I have a Hannah pH probe. One of the links
provided by said that for a reference probe, silver
chloride should be used along with potassium chloride. If you have a pH
probe, it said to use buffer solution. What's the difference between a
reference probe and a pH probe?

Other posts to this newsgroup state that using the buffer solution can
damage your pH electrode. Yet, other posts state buffer solution should be
used. All conflicting information. So... what solution should be used?
Just straight potassium chloride?

-Paul

"Richard Kovach" > wrote in message
om...
> Best case, it would depend on what kind of probe you have. If your
> probe contains the same type of solution it might be fine, but if not,
> I doubt it would be a good idea!
>
> Many people say that 7.0 buffer (calibration) soln is the next best
> thing -- I would use that until I can get my hands on some proper
> storage soln.
>
> Richard
>
> "Paul S. Remington" > wrote in message
>.. .
> > My buddy works in a food testing facility and I'm looking for pH
> > electrode storing solution. In one of the cabinets in the lab he found
a
> > bottle marked, "Electrode filling solution 4 Molar Potassium Chloride
> > Saturated with Silver Chloride".
> >
> > Can I use this as an electrode storing solution? I know I need
> > potassium chloride but I don't know what the rest of the stuff is, like
> > silver chloride.
> >
> > Thanks!
> >
> > -Paul

You do not have a reference probe unless you have two probes; most
probes incorporate it and a sensing probe in one, called a combination
probe. You can buy storage solution, you can use the pH 7 buffer
solution, just DO NOT use distilled water.

Without getting too technical, the meter is actually measuring a
differential voltages between the reference electrode and sensing
electrode. You are kind of making a battery when you measure
something. Some probes contain solution, most contain gel, yours is
probably gel. The 'stuff' you are talking about is actually filling
solution, I would not store my probes in it.

Hope that helps.
Joe

"Paul S. Remington" > wrote in message >.. .
> Thanks Richard, et. al.,
>
> This is confusing... I have a Hannah pH probe. One of the links
> provided by said that for a reference probe, silver
> chloride should be used along with potassium chloride. If you have a pH
> probe, it said to use buffer solution. What's the difference between a
> reference probe and a pH probe?
>
> Other posts to this newsgroup state that using the buffer solution can
> damage your pH electrode. Yet, other posts state buffer solution should be
> used. All conflicting information. So... what solution should be used?
> Just straight potassium chloride?
>
> -Paul
>
> "Richard Kovach" > wrote in message
> om...
> > Best case, it would depend on what kind of probe you have. If your
> > probe contains the same type of solution it might be fine, but if not,
> > I doubt it would be a good idea!
> >
> > Many people say that 7.0 buffer (calibration) soln is the next best
> > thing -- I would use that until I can get my hands on some proper
> > storage soln.
> >
> > Richard
> >
> > "Paul S. Remington" > wrote in message
> >.. .
> > > My buddy works in a food testing facility and I'm looking for pH
> > > electrode storing solution. In one of the cabinets in the lab he found
> a
> > > bottle marked, "Electrode filling solution 4 Molar Potassium Chloride
> > > Saturated with Silver Chloride".
> > >
> > > Can I use this as an electrode storing solution? I know I need
> > > potassium chloride but I don't know what the rest of the stuff is, like
> > > silver chloride.
> > >
> > > Thanks!
> > >
> > > -Paul

Paul,

I also have a Hannah pH probe (pHep 5) and have been storing it in 7.00
buffer solution for the past year, I also keep some 4.0 buffer for a
2-stage calibration but only use the 7.00 for storage.

I've just purchased two additional products recommended by my supplier,
the proper storage solution as well as a cleaning solution. They
recommend cleaning the probe about once a month during those times when
you're using it otherwise just keep it in the proper storage solution.

I would discourage use of the storage solution from your friend as it
may be just fine, it could result in a damaged probe.

Glen Duff
-----------

Joe Sallustio wrote:

> You do not have a reference probe unless you have two probes; most
> probes incorporate it and a sensing probe in one, called a combination
> probe. You can buy storage solution, you can use the pH 7 buffer
> solution, just DO NOT use distilled water.
>
> Without getting too technical, the meter is actually measuring a
> differential voltages between the reference electrode and sensing
> electrode. You are kind of making a battery when you measure
> something. Some probes contain solution, most contain gel, yours is
> probably gel. The 'stuff' you are talking about is actually filling
> solution, I would not store my probes in it.
>
> Hope that helps.
> Joe
>
> "Paul S. Remington" > wrote in message >.. .
>
>>Thanks Richard, et. al.,
>>
>> This is confusing... I have a Hannah pH probe. One of the links
>>provided by said that for a reference probe, silver
>>chloride should be used along with potassium chloride. If you have a pH
>>probe, it said to use buffer solution. What's the difference between a
>>reference probe and a pH probe?
>>
>> Other posts to this newsgroup state that using the buffer solution can
>>damage your pH electrode. Yet, other posts state buffer solution should be
>>used. All conflicting information. So... what solution should be used?
>>Just straight potassium chloride?
>>
>> -Paul
>>
>>"Richard Kovach" > wrote in message
.com...
>>
>>>Best case, it would depend on what kind of probe you have. If your
>>>probe contains the same type of solution it might be fine, but if not,
>>>I doubt it would be a good idea!
>>>
>>>Many people say that 7.0 buffer (calibration) soln is the next best
>>>thing -- I would use that until I can get my hands on some proper
>>>storage soln.
>>>
>>>Richard
>>>
>>>"Paul S. Remington" > wrote in message
>>>
>> >.. .
>>
>>>>My buddy works in a food testing facility and I'm looking for pH
>>>>electrode storing solution. In one of the cabinets in the lab he found
>>>>
>> a
>>
>>>>bottle marked, "Electrode filling solution 4 Molar Potassium Chloride
>>>>Saturated with Silver Chloride".
>>>>
>>>> Can I use this as an electrode storing solution? I know I need
>>>>potassium chloride but I don't know what the rest of the stuff is, like
>>>>silver chloride.
>>>>
>>>> Thanks!
>>>>
>>>> -Paul
>>>>