Re: [Killietalk] pH meter

["Ron Schulz" <ron_schulz at gmail.com>]

Well......less than I would have guessed.. Sounds like a good
alternative for anyone who has gone through several of those
disposable types. Still quite expensive though
.....................................Ron Schulz......Dutchess County NY

On 7/26/08, Barry Cooper <barry_cooper at mac.com> wrote:
> They are quite expensive, around $200 depending on model. See
> http://www.phmeters.com/shopsite_sc/page8.html
>
> I have the meter I ordered and am very happy with it. It's quick, easy
> to calibrate, with no screws to turn (just put a drop of buffer on the
> probe) is stable and, as previously mentioned, is stored dry, which I
> think is a big advantage in a fishroom setting.
>
> Barry
>
> Ron Schulz wrote:
>> Hi Barry,
>>  A little perspective.......how much did the ISFET meter cost?
>>
>> ....................................Ron Schulz.......Dutchess County
>> NY UNYKA, MAKA
>>
>> On 7/20/08, Barry Cooper <barry_cooper at mac.com> wrote:
>>
>>> Wright Huntley wrote:
>>>
>>>> I use the pH meter very infrequently, so the cheaper Hannah ones do fine
>>>> for me.
>>>>
>>>> My biggest problem was in the bay area, where hard water scale made the
>>>> sensor eventually get a bit squirrelly.  The solution was a soak in the
>>>> pH=4 calibration buffer, which always seemed to restore normal ability
>>>> to calibrate and use them.
>>>>
>>>> Barry's problem sounds more like a battery issue, but a wash in acid
>>>> might be worth a try.
>>>>
>>>> Wright
>>>>
>>>>
>>>>
>>> Well, the point is, as Brian Watters pointed out, most of us use these
>>> things infrequently. However, every now and again I need to check the pH
>>> of my tank water, as my well water comes out of the tap at pH 10.
>>> Prolonged soaking has not restored y Hannah meter. I always put buffer
>>> on a wad of cotton wool in the bottom of the cap, but I'm sure that it
>>> still dries out between uses. So, any meter whose sensor needs to be
>>> kept wet is a problem for hobbyists, or at least for me. I decided to
>>> bite the bullet and by an ISFET meter. As Brian pointed out, they can be
>>> stored dry. The sensors are replaceable, if ever needed and they can
>>> measure the pH of a single drop of water. They can be calibrated with a
>>> single drop too.
>>>
>>> BC
>>>
>>> --
>>> Barry J. Cooper
>>> Sweet Home, OR 97386
>>>
>>> Join the AKA at http://www.aka.org/aka/modules/content/index.php?id=9.
>>> Archives are at http://fins.actwin.com/killietalk/
>>> Modify your subscription at
>>> http://www.actwin.com/mailman/listinfo.cgi/killietalk
>>>
>>>
>> Join the AKA at http://www.aka.org/aka/modules/content/index.php?id=9.
>> Archives are at http://fins.actwin.com/killietalk/
>> Modify your subscription at
>> http://www.actwin.com/mailman/listinfo.cgi/killietalk
>>
>
>
> --
> Barry J. Cooper
> Sweet Home, OR 97386
>
> Join the AKA at http://www.aka.org/aka/modules/content/index.php?id=9.
> Archives are at http://fins.actwin.com/killietalk/
> Modify your subscription at
> http://www.actwin.com/mailman/listinfo.cgi/killietalk
>
Join the AKA at http://www.aka.org/aka/modules/content/index.php?id=9.
Archives are at http://fins.actwin.com/killietalk/
Modify your subscription at http://www.actwin.com/mailman/listinfo.cgi/killietalk