Re: (Gum) Tonal scale

These are very interesting results Katharine, thanks for sharing them with
us.

I ear that some acid (sulfuric acid maybe) could help to clear the
dichromate, I'd be curious to see or ear about a similar test using it???

Thanks
Yves

----- Original Message -----
From: "Katharine Thayer" <kthayer@pacifier.com>
To: "alt photo" <alt-photo-process-l@sask.usask.ca>
Sent: Sunday, December 04, 2005 9:50 AM
Subject: Re: (Gum) Tonal scale

> I accidently sent this to myself instead of to the list, (still
> figuring out my new mail program) so I'm sending it again, to you.
>
> On Dec 3, 2005, at 1:00 PM, Katharine Thayer wrote:
>
> >
> > After I wrote that about dichromate stain, I remembered that I have a
> > page showing the color of unstained gum, of dichromate-stained, and of
> > cleared stained gum, on my site; here it is if anyone is interested:
> >
> > http://www.pacifier.com/~kthayer/html/gumcolors.html
> >
> > The samples don't show different tones, because it was gum that was
> > exposed without a step tablet or any kind of negative, just hardened
> > gum. that's when I was working on that project of making gum for
> > chemical analysis.
> > kt
> >
>
Received on Mon Dec 5 22:25:33 2005