[pure-silver] Re: Citric Acid as stop bath
- From: Jean-David Beyer <jeandavid8@xxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Wed, 13 Oct 2010 15:24:33 -0400
Gerald Koch wrote:
> This is a problem with citric acid and is the reason that many people
> use it as a one shot. You can add a snall crystal of thymol to the
> solution. See if there is a compounding pharmacy in your area which
> might be able to sell you a small amount. Your stop bath will smell
> like Listerine. If you can't obtain thymol then add a drop or two of
> phenol.
I would hesitate to use phenol in a stop bath. While it is a mild acid,
I would think it too toxic for casual use.
> You can also try adding a gram of sodium or potassium bisulfite
> which is used to sterilize wine bottles.
>
> You could switch to a boric acid stop bath which also has no smell. Use
> 30 g/l as a working solution. Use crystalline boric acid rather than
> the powder.
>
> Jerry
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