Silver nitrate will indeed stain just about anything it touches and you can produce silver nitrate with an HVAC setup.
I think it's unlikely to produce any significant amount of silver nitrate with an LVDC setup.
The nitrate comes from exposing air to a high voltage arc. [nitric acid plus silver]
But silver ions cannot survive in open air, so any CS that has a high ionic content that is allowed to dry will form brown to black silver oxides.
This is also what causes filters to change color. It's not a reaction with the paper as some think.
Un bleached paper filters are already brown.

Ode

At 11:50 AM 10/25/2003 EDT, you wrote:
>>>>
Gee people,


In the past, I had many stains on my white tile workbench from "CS."
When I started making "CS" without any SILVER NITRATE, guess what,
NO STAINS!


For want of a better cheap test, go to a store that sells aquarium supplies,
They will have a Nitrate Test Kit for about $6.00. Test your "CS", if you have Silver Nitrate,
Find a way to make it without the nitrate!


Dr. Bill

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