From: FB (aikus@freemail.hu)
Date: 09/18/01-08:03:38 AM Z
I have not any experience about making the solution because
I got it as a ready stock solution from the
photochemical-shop (an one woman band type shop and labor in
Budapest).
Perhaps the second version was what I'm used (Na sulphite
and selenium) because the solution was not stinky (like the
Na sulfide).
As we now the selenium is a poison in the solution also, so
well ventilated workplace, protecting gloves, etc always
recommended.
This treatment changed the color of the mentioned POP from
yellowish to reddish. And the max. density is increased a
bit (less than gold toner can do).
With temperature of the solution you can also controll a bit
the color: colder is yellowish and warmer is purplish.
A suggestion: to prevent the density-eating effect of fixing
salt try it without ammonium chloride which is a silver
solvent in this receipt if I know well (Na sulphite also a
silver solvent but as I know it is necessary in this
solution - unfortunately all three version was created for
developing out papers which has much larger silver corns
inside).
Balint Flesch
*****************
Date sent: Tue, 18 Sep 2001 13:42:19 +0200
From: "Breukel, C" <cor@lumc.nl>
Subject: :Re: Gold Toning VDB prints]
To: "alt-photo-process-l@sask.usask.ca"
<alt-photo-process-l@skyway.usask.ca>
>
> ..I believe you have to boil this solution to get the
selenium into
> solution, at least that is what the T55 formula of Kodak
calls for:
> (this is a quote from theweb site:
> http://digipicture.com/anglais/shop/paper01.htm#, I found
this formula in
> other sources as well)
>
> TAKE PROPER PRECAUTIONS WHEN BOILING SELENIUM POWDER!!!!!
>
> when you do not have the proper lab equipment and
knowledge about
> handeling (and disposing!) dangerous chemicals, you'll be
probably
> better of overprinting your POP and tone with much diluted
Kodak
> Selenium toner
>
> Selenium toner bath Kodak T55 formula :
>
> hot distilled water:
> 700 ml
> anhydrous sodium sulfite:
> 150 g
> selenium ( pulver) :
> 6 G
> ammonium chloride :
> 190 G
> water to make :
> 1000 ml
>
> Add selenium and let boil 30 min.
Filter to
> eliminate
> the residues, let cool and add
ammonium chloride.
> supplement with cold water to make
one liter. For
> the use, a volume of this solution
is diluted
> with 5
> volumes of water.
> The phototype is immersed lO to 15
min (@ 20°C),
> then washed carefully according to
the conditions
> indicated in the preceding lines.
>
>
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