This month DIY magazine has an article on testing your boats bonding system
/ zincs and I think they said that West Marine carried them. I've not
checked the catalogue.
They also mentioned a couple of companies that sell "corrosion meters" and
these guys sell the electrodes. Try searching in Google for corrosion
meters or silver chloride reference cell.

"hanz" wrote in message
...
Where can I get a Na/NaCl (silver/silver chloride) reference electrode?
I have a good digital multimeter, just need the probe.
Thanx

Hanz