Re: Remove Lead (i.e. Pb) marks from an enamel bathtub?????


"Unknown" <dwilkins@xxxxxxxxxxx> wrote in message
news:gvv2h11rp8e4ok2p1m680224epr8elrj1l@xxxxxxxxxx
> On 27 Aug 2005 15:39:01 -0700, "muha" <muhammar@xxxxxxxxxxx> wrote:
>
>>,;nitric acid - and be carefull since it likes to eat other metals
>>,;also...
>
> Vinegar (acetic acid) and hydrogen peroxide and you don't need to be
> quite as careful.
>
Start with dilute acid and then look at the enamel - some enamels can be
easily etched.
(? I know it - it's suppose to be glass, but a common test was to etch the
surface with citric acid (~5% for 15min or so- I forget the exact
procedure) and visually rate the etch mark left)
H2O2 is definitely worth a try.
Gregg


.

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