Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [Homebrew_PCBs] Copper oxides - respiratory problems?

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2006-04-18

On Tue, 18 Apr 2006 02:03:30 +0200, Herbert E. Plett <cachureos@...>
wrote:

> It appears as though
>
>> the copper oxide (whatever the black stuff is) can be a repiratory
>
>> irritant of some sort.
>
> ...
>
>
> the way to remove the oxide is with muriatic acid (HCl)...
>


Or sand under water if you must.

ST