Removing Miniature Oxidization

So I have a few old minis that are lead and white metal and have turned super dark grey.
Not exactly full on"lead rot" but certainly a bit more corroded than I would like.
So came across this article on how to remove the oxidization and I am partly tempted to give it a go on a couple of my older minis. They are only likely to continue to degrade, so have little to loose.

http://minismuseum.com/2015/12/27/lead-rot-cleaning-pt-1/

I am familiar with electrolysis for cleaning rust off Cast Iron. I have just never used it for the purposes of cleaning miniatures. I will have to hunt out some carbon rods to use and give it a go!