Paper mills are a source of sulphur gases. In a previous life I serviced
bench-top
instrumentation; the ones that came in from mills smelled nasty and
frequently just
an overall cleaning resolved any operational issues.

Craig Cullum, Engineering Technologist, AMTELCO
e: [log in to unmask]
   [log in to unmask]
f: 608 838 8367
v: 608 838 4194, or 4197, x128

Visit AMTELCO at www.amtelco.com

Remember that a lone amateur built the Ark. A large group of professionals
built the Titanic.

We have enough youth, how about a fountain of SMART?

"I couldn't wait for success . . . so I went ahead without it." Jonathan
Winters

> -----Original Message-----
> From: Brian Ellis [mailto:[log in to unmask]]
> Sent: Tuesday, August 31, 2004 5:36 AM
> To: [log in to unmask]
> Subject: Re: [TN] Tarnish Immersion Silver
>
>
> Silver sulfides readily and copper somewhat less so in the presence of
> sulfur (atmospheric hydrogen sulfide and sulfur dioxide
> gases). This is
> normal. The immersion silver is thin and sufficiently porous for the
> underlying copper also to be sulfided. Stopping atmospheric pollution
> from fossil fuels would go a long way towards slowing down
> the problem,
> although there are other sources of sulfur gases (including eggs!)
>
> Brian

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