[Alt-photo] Re: Was Sulfamic now VDB and pt/pd gold leaf

[Loris Medici]

Hi Darryl,

I pour the sodium hydroxide solution slowly into the silver nitrate
solution stirring vigorously, you get silver oxide precipitation w/o any
extra volume increase. Maybe you're remembering another experiment as you
say...

If you're going to use silver oxide precipitated by used fixed be sure to
wash it thoroughly, I doesn't sound a perfectly pure way of getting it but
may work if it's clean enough.

Regards,
Loris.


2013/5/13 Darryl Baird <darryl at darrylbaird.com>
>
> Loris are you pouring them slowly? I seem to remember that making a
> "speedy" mixture was more a problem, but it has been several years since
> I've mixed these together. I recall a 1 liter beaker rapidly becoming
> "full" when mixing a similar amount... perhaps I'm remembering the Drano
> experiment?
>
> I have about two gallons of spent fix on hand, so I'll be
> trying the steel wool trick this summer. Might as well try some
> argyrotype while I'm at it.
> ...