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March 2003

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Subject:
Re: Mercury Free Cert
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 18 Mar 2003 15:01:50 +0200
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text/plain (48 lines) 
The only one I know of went out of being c. 35 years ago: it was an
ammonium persulfate etch catalysed by a small quantity of mercuric
chloride. However, if you broke a thermometer into that copper bath... :-)

Brian

Mark Hargreaves wrote:
> Hi All,
> Seems to be my month for receiving unusual certification requests from our
> bare board customers.
>
> Yesterday, a customer asked us to certify that our boards (or is it our
> processes?) are "mercury free".
>
> Before I start sifting through MSDS's, is anyone aware of any PCB materials
> (FR4), chemistries or processes that typically contain mercury?
>
> Are there any good info sources out there regarding mercury & PC fab?
>
> Many thanks for your responses to all of my past questions.
>
> Mark Hargreaves
>
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