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Salmon Egg · 26-01-2007, 06:46 PM posted to rec.gardens.edible

On 1/26/07 5:49 AM, in article
, "
wrote:

ou can also try to get color indicating titration kits. They are
simple to use. They have a graduated flask to hold the sample and you
count the drops to color change to get a pH or other wet chemical
concentration like Chlorides or Nitrates. I have used these in
manufacturing plant situations where operators need pH or cleaning
chemical concentrations to do their job. No real lab skills or
expensive to repair equipment needed.

If still want a digital pH meter you can get calibration solutions and
do the servicing yourself. You should also be keeping a glass probe in
deionized water when not in use. There are also polymer membrane
probes you may want to look into instead of glass. If you know that
you are always basic or acidic you could also opt for a generally more
rugged conductivity probe and convert the number you get to pH.

Thank you for the information. I do have an indicator solution that will
work although the pH meter is more convenient.

I have been storing the electrode in a pH7 buffered calibration solution.
Would it help if I store it in a concentrated KCl solution? That seems to be
the way the electrodes get shipped. Where can I get information on how
electrodes fail?

Bill