[alt-photo] Re: argyrotype

[Loris Medici]

That's funny; I've read this right after dumping a 4 y/o Argyrotype
bottle! Not because I tested it and it didn't work but because there
was silvering on the inside walls of the bottle and substantial amnt.
of dark precipitate in the bottom...

BTW, I never achieved almost platinum blacks with both Argyrotype and
Vandyke. Perhaps related to compounding/mixing; I don't use pure
silver oxide but make it myself... (silver nitrate + sodium hydroxide)
For me, when it comes to blacks single coat Argyrotype was better than
single coat Vandyke, double coat Vandyke was better than single coat
Argyrotype and gold-toned Argyrotype and Vandyke were both better than
all.

Regards,
Loris.


2010/2/18 Christina Anderson <zphoto at montana.net>:
> Dear List,
> Yesterday we started our argyrotype unit and I thought I'd share a couple points.
>
> I tested old argyrotype from 3 years ago and it printed beautifully.  I was able to get 8  stops out of it on a Stouffers 31
> step with a  printing time slower a bit--10.6 minutes--than fresh argyrotype which I had mixed for the class. So don't throw
> out old stuff til you test it. This was on Weston paper.
> ...