On Thu, 13 Sep 2007 01:15:13 +0200, homebrewdude
> wrote:

> I changed the probe
>
> Now it calibrates fine with no errors....
>
> I also bought some pH storage solution. Hopefully I get more then 2
> years on this probe.

If you don't have storage solution you may use pH 7 buffer, the one used
for calibration. pH electrodes have limited lifespan, they are rarely
working than about a year. Sure, you may be lucky to have one that
survives longer

See more on the http://www.ph-meter.info/ site.

Borek
--
http://www.chembuddy.com/?left=BATE&right=pH-calculator
http://www.ph-meter.info/pH-electrode
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http://www.terapia-kregoslupa.waw.pl