Re: gold toner
Very interesting- do toners (gold) that come in a kit become less stable than the kind one makes from scratch like the one gram of gold to ammon. thiocyanate? Is the Gold protection package as in Berg similar to a real gold toner? Mike Robinson, the Albumen expert uses the Gold protectant instead of Gold toner for toning. I have been having those blank, blank spots post processing from ? fixer or Gold in the thiocyanate solution as Chicago Albumen Works suggest rather than the kits where I nevre had those spots. Any suggestions? Thanks, Susan Huber ----- Original Message ----- From: "Sandy King" <sanking@clemson.edu> To: <alt-photo-process-l@usask.ca> Sent: Monday, December 11, 2006 12:22 PM Subject: Re: gold toner > Rajul, > > I don't believe there is much I can say to reconcile differences. I > have used the gold formula that is made up of 5-10 grams of citric > acid and 5ml of a 5% gold solution but it was not as stable in stock > solution as the palladium and platinum toners I more routinely use. > The latter last for months in stock solutions, whereas my > recollection is that the same toner with gold lasts for no more than > a month or so. I may have contaminated the solution and accelerated > its demise, but I did not find it stable by comparison to the > palladium and platinum toners. > > As for the method described by Arentz, I have never used it for > toning kallitypes. > > > Sandy > > > > > > > > At 10:33 AM -0800 12/11/06, Venkatram Iyer wrote: > >Hi Sandy, > > > >Your article on the Unblinking Eye website gives the better Au toner > >recipe to contain 50 ml 1% AuCl4, 1% thiourea and 0.5g tartaric > >acid. When I made this up, a slurry (colloidal gold?) separated out. > >However, it did work as a toner. > > > >When I checked other formulae for the toner, I found that both Chris > >Anderson in her book Alternative Processes Condensed (p.81) and > >Carmen Lizardo (p.19 of PFF#8) prescribe: 10 or 5 g. citric acid / > >liter respectively + 25 ml 1% AuCl4. You state that this formula is > >unstable (your Unblinking Eye article). > > > >Dick Arentz in his 2000 book on Pt and Pd printing (p. 81) suggests > >that AuCl4 can be brushed onto the wetted print usually with > >glycerine to control application. > > > >I would appreciate your input/clarification on the above differences. > > > >Many thanks. Rajul > > > > > > > >PS- I am re-sending this message because I have not received > >confirmation that the one sent to the alt photo site went through. >
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