[Fwd: Arches Platine Problem]
Jonathon Russell (Hylandscot@voyager.net)
Sun, 24 Mar 1996 09:44:29 -0500
Steve Avery wrote:
>
> Hi all,
> another bounced message (remember - reply to originator).
>
> cheers
> -steve
>
> ------- Forwarded Message
>
> From: KOUKLIS_KERIK@aphub.aerojetpd.com (Kouklis Kerik T)
> To: alt-photo-process@vast.unsw.edu.au
> Subject: Arches Platine Problem
> Date: 21 Mar 96 09:18:25 PST
>
> I've recently started using Arches Platine for my platinum work.
> I've found that occaisionally I end up with small black spots on the
> prints that are not visible until after the print is developed. Has
> anyone else experienced this problem or does anyone have any idea
> what may be causing it?
>
> Any thoughts or suggestions would be appreciated.
>
> Kerik Kouklis
> Kouklis_Kerik@aphub.aerojetpd.com
>
> ------- End of Forwarded Message
I had the same problem. Discovered that the black spots were caused by
not warming the platinum solution so as to put back into solution the
platinum salt crystals. This is a problem when the weather gets cold
(ie: darkrooms in basements, etc.). The platinum salt will crystalize at
normal room temperature and needs to be warmed. The black spots come
from small bits of undissolved crystal being spread onto the paper.
Hope that this helps.
Jonathon