[alt-photo] Re: toning a kallitype with LiPd or CsPd

[Alberto Novo]

In a few words, Pt or PD replace silver. But this is only a too short reply.
Just in a few days I will have the results of a pt-toned kallitype analized 
by XRF (X Ray Fluorescence), which will let me know if my (supposed) full 
toning was effective in replacing silver. 

>> Can I get the equivalent of a Ziatype by toning a kallitype with LiPt or CsPt salts rather than by including the LiPt or CsPt in the emulsion?
> 
> Does, in fact, the toning replace the silver as it does when toning a BW print--you get silver selenide or silver sulfide--or is it only partial or not at all?  Has anyone done it and can a chemist say what does happen at the chemical level?  If I remember, Don Bryant, you toned VDB with pt/pd didn't you? Is it a way to get a poor man's platinum perhaps?

About the equivalence between a true platinum or ziatype and a toned 
kallitype, don't be too hopeful: the hue depends also on that of the 
original silver print, and with platinum you can achieve a warm bkack 
instead of pure black. 

Alberto
www.grupponamias.com