In a message dated 10/22/2001 7:23:18 AM Eastern Daylight Time, 
[email protected] writes:


> Generally, the 'fluff' is a pure silver structure formed and solidified
> around hydrogen bubbles if it's gray and silver oxide if it's black.
> Neither are harmful.
> Much of the gray stuff even tends to dissolve in a white mist and some of
> it makes a white deposit that sticks to the bottom, if left alone, as the
> hydrogen bubbles self destruct. 
> Ken
> 

Ken: How were you able to confirm that the gray stuff was silver, and the 
black stuff was silver oxide? Roger