From: Jeffrey D. Mathias (jeffrey.d.mathias@worldnet.att.net)
Date: 01/26/02-06:39:22 AM Z
Carl Weese wrote:
> LiPd works very well for develop-out prints, just use standard ferric
> oxalate. I prefer the final print color with some papers to standard
> palladium solution. ...
clay wrote:
> Wow, I've got a small bottle of the stuff and have never tried
> it for DOP.
> Is the color warmer or colder than the usual palladium salt?
There can be many subtle differences and some strong differences which
can also be influenced by the paper or other factors. The greatest
difference is in print color.
In general the 3 typical Pd double salts I use have the following
primary differences in print color:
Li2PdCl4 - orangeish brown (DOP) to bluish (POP)
Na2PdCl4 - yellowish brown to dark brown
K2PdCl4 - brownish or reddish brown to black
The Li and high humidity and even some Pt salt are needed for the blues.
I personally do not like the yellow color from the Na salt with most
papers and therefore tend not to use it. The K salt definitely needs to
be warmed to stay in solution.
Also, all the double salts may be mixed (some of this, some of that)
with the results having the variety of mixing spices when cooking. The
metal salts should each be at the proper solution strength so as to be
balanced with the sensitizer.
-- Jeffrey D. Mathias http://home.att.net/~jeffrey.d.mathias/
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