[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: platinum/palladium coating - exposing POP
Yes, the lithium palladium solution is stable by itself but as a component
of the coating mixture should only be added just prior to coating.
Eric J. Neilsen
4101 Commerce Street, Suite #9
Dallas, TX 75226
214-827-8301
http://e.neilsen.home.att.net
http://www.ericneilsenphotography.com
----- Original Message -----
From: "Jeffrey D. Mathias" <jeffrey.d.mathias@worldnet.att.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Thursday, April 19, 2001 4:27 AM
Subject: Re: platinum/palladium coating - exposing POP
> Eric Neilsen wrote:
> > ...I would caution against premixing palladium lithium mixtures. I
> > have found it best to mix each coating solution just before use with any
of
> > the lithium added as a component. ...
>
> Eric,
> To avoid possible confusion,
> is it correct to assume you meant to say:
> I would caution against premixing Li2PdCl4 into the coating mixture. I
> have found it best to mix each coating mixture just before use with any
> of the Li2PdCl4 solution added as a component.
>
> The Li2PdCl4 solution should be stable and not go bad. I have also
> found it important to mix the coating mixture in the following order:
> sensitizer, metal salt(s), contrast agent(s). Any metal salts may be
> mixed or matched, as well as any contrast agents. It is recommended to
> only use one of the sensitizers (FO or AFO are typically used, but not
> combined).
>
> --
> Jeffrey D. Mathias
> http://home.att.net/~jeffrey.d.mathias/
>