[Alt-photo] Re: Was Sulfamic Argyrotype and toning

Sandy King sanking at clemson.edu
Wed May 15 22:34:48 UTC 2013


Hi Loris,

I do not use glycerin with either vandyke or argyrotype. Why do you use it?

Agree about the stability of the gold toner. I would not trust it either if over 3 months old.

Sandy


On May 15, 2013, at 9:49 AM, Loris Medici wrote:

> Hi Sandy, I agree for Vandykes (same results here, since the beginning),
> but I yet have to manage to get fully blue-black (from highlights to
> shadows) gold toned prints with Argyrotype, the deepest shadows remain very
> slightly warm against the mid tones and highlights... Perhaps it due the
> addition of glycerin to the stock solution, do you add glycerin?
> 
> The shelf life / stability of the toner is good but can't be considered
> stable; I haven't used toner older than 3 months, I mix 1000-2000ml small
> batches... I do it that way since I saw gold deposits on the sides of the
> bottle that was sitting around 5-6 months. (Maybe it started to deposit
> earlier - I can't be sure, it was waiting my attention in the closet...)
> OTOH, my gold salt is different than what you all use; I don't have access
> to straight gold chloride (can't buy it locally) therefore I use locally
> avaiable potassium tetrachloroaurate.
> 
> Regards,
> Loris.
> 
> 
> 2013/5/15 Sandy King <sanking at clemson.edu>
>> 
>> Loris,
>> 
>> If you tone a vandyke or argyrotype print to completion with a gold
> thiourea
>> toner the deepest shadows should have a distinctive bluish-black color. If
>> the tone that remains is slightly reddish/magenta/purplish the toner has
> not
>> done its job. The toner may be weak, or you might need to use more of it.
>> 
>> I have noticed that some of the my batches of gold thioura toner do not
>> seem to work as effectively  as in the past and have wondered what could
>> be the cause. It would seem that the gold chloride, distilled water and
> salt
>> would remain stable, wonder if the chemical thiourea goes bad?
>> 
>> Sandy
>> 
>> 
>> On May 15, 2013, at 3:50 AM, Loris Medici wrote:
>> 
>>> Hi Marek they look nice, thanks for sharing. The result with gold toner
>>> look very much like what I get; somehow, you can't totally neutralize
> the
>>> warmth in the deepest shadows - a very dark and slight reddish / magenta
>>> tint remains...
> _______________________________________________
> Alt-photo-process-list | lists.altphotolist.org/mailman/listinfo



More information about the Alt-photo-process-list mailing list