RE: formula for gold toner

[Loris Medici <mail@loris.medici.name>]

I put some distilled water into the container, then pour the gold solution,
stir well, pour the thiourea solution, stir well (the solution becomes
clear), then I add tartaric acid and stir vigorously until it dissolves
completely (it takes some time to dissolve tartaric acid). I add distilled
water to make up the final volume. I omit Sodium Chloride.

Regards,
Loris.

-----Original Message-----
From: Venkatram Iyer [mailto:eyeear@telus.net] 
Sent: 12 Aralık 2006 Salı 18:22
To: alt-photo-process-l@usask.ca
Subject: Re: formula for gold toner

Loris,

Thanks for your input. Is there a particular order in which you mix the
ingredients?

Rajul


On 11-Dec-06, at 10:50 PM, Loris Medici wrote:

> Rayul,
>
> I think you definitely have some problems with your materials. Is it 
> Gold? Thiourea? Tartaric Acid? even Distilled / De-Ionized Water? I 
> used the Gold-Thiourea toner extensively and never experienced any 
> precipitation. This toner is quite stable and will work even months 
> later. (Will plate the container if you introduce impurities - so it's 
> best used one shot if you need consistency.)
>
> Regards,
> Loris.