From: Linas Kudzma (lkudzma@earthlink.net)
Date: 01/15/02-09:13:19 PM Z
Wendy,
What I was talking about was using what B&S calls NA2 platinum as a
contrast agent in place of B&S Sol#2. There is a good technical paper about
this special platinum complex on the B&S web site.
I'm surprised you can hang the sheets with B&S Sol#2 overnight. I found
that anything with chlorate (as in sol#2) needed to be used promptly (a few
hours). It may be paper dependant? I don't use Platine.
Linas
> [Original Message]
> From: Wendy Gollihue <wgolli@flash.net>
> To: <lkudzma@earthlink.net>
> Date: 1/15/2002 1:26:06 PM
> Subject: Re: Papers
>
> Linas,
>
> I use the B&S palladium solution no. 3 that uses NaCl. I use the Ferric
> oxalates 1 $2 from B&S at 27%.
>
> Is your finding also true with palladium as the component. I truly have
had
> no problems hanging it (platine) all night in the dark but will listen and
> am willing to change to prevent upcoming difficulties that others have
> experienced.
>
> Wendy (TX)
>
> ----- Original Message -----
> From: "Linas Kudzma" <lkudzma@earthlink.net>
> To: "alt-photo-process-l" <alt-photo-process-l@sask.usask.ca>
> Sent: Monday, January 14, 2002 10:38 PM
> Subject: Re: Papers
>
>
> | Carl,
> | Paper coated with only FeOx and metals, with the Pt component being
> | Na2PtCl6, can sit in the dark for days without any bad effect. I'm using
> | Na2PtCl6 (sodium chloroplatiATE) as the contrast agent (typically 20% of
> | the metals). In fact, sometimes I like the prints better from such
paper
> | that sat in the dark overnight. Maybe this is due to a slower, more even
> | drying? This is for DOP prints on Cranes Cover 90 Natural.
> |
> | Previously, when I used chlorate for contrast, letting paper sit
overnight
> | was not possible. This was without a doubt due to side reactions of the
> | chlorate, which is a very reactive oxidizer. The Na2PtCl6 salt is very
> | stable and a nice contrast agent.
> |
> | Linas
> |
> | > [Original Message]
> | > From: Carl Weese <cweese@earthlink.net>
> | > To: <alt-photo-process-l@sask.usask.ca>
> | > Date: 1/14/2002 12:35:02 PM
> | > Subject: Re: Papers
> | >
> | >
> |
> | > > Wendy: Internally sized. Very textured surface -- not good or bad,
> | just a
> |
> | > > question of whether you want that or not for a given image. Tough,
> | heavy
> |
> | > > paper. YOU HAVE TO "RE-ACIDIFY" IT for pt/pd printing,
> |
> | >
> |
> |
> |
Linas Kudzma
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