Please do that, I’m eager to see what you find out!
Yes. The following is taken from:
Rechloriding & Storing Grass Ag/AgCl Electrodes(http://www.grasstechnologies.com/knowledgebase/sterile7.html)
[font=Courier]Rechloriding the Electrode
- Thoroughly clean the silver surface electrodes of tarnish and dirt. Scouring powder or silver cleaner may be used.
- Place the electrode in an opaque non-metallic container with 5% salt (NaCl) solution.
- Connect the electrode to be chlorided in the (+) positive terminal of a 1.5 volt battery and the other electrode to the (-) negative terminal. Use a 100 ohm resister in series with the electrode.
- The chloriding electrode darkens, while the other bubbles. Continue until the darkened surface is evenly coated.
Storing the Ag/AgCl Electrodes
To preserve the chlorided surface when not in use, it is recommended that the electrodes be stored in a salt solution, such as a sterile saline solution. If desired, it is possible to add 0.1% Zepherin Chloride as an anti-bacterial agent[/font]
This image is taken from: http://www.gtec.at/Support-Offer/FAQ/Tips
AFAIK you don’t need a silver plate for the cathode side. Just see to it that you don’t use anything that could contain even minute amounts of chromium under any circumstances, ever. (Like stainless steel.) Depending on what you use and how you hook it up, it might leak hexavalent chromium into the water, very toxic. You’ll probably have good results with graphite (eg. from a pencil) or titanium (spork?).
If this left things unclear, I can maybe make a youtube video or something.
Best,
Martin