From: Richard Knoppow (email@example.com)
Date: 10/02/02-04:25:14 PM Z
----- Original Message -----
From: "Judy Seigel" <firstname.lastname@example.org>
Sent: Tuesday, October 01, 2002 8:53 PM
Subject: Re: Poly Toner lots here...
> On Tue, 1 Oct 2002 ARTHURWG@aol.com wrote:
> > <PRE>Thanks for the formulas, Richard.
> Does anyone know when "Poly Toner" was first marketed ? I
checked my old
> Photographic Facts & Formulas, ca 1979. Not there. So I
checked Photo Lab
> Index, also 1979. Not there either. My recollection was
that PLI listed
> all the products, but only some formulas. My recollection
> Poly Toner wasn't listed, nor was Kodak Rapid Selenium.
> was a formula for Kodak T-8, polysulfide toner, as
> Water 750 ml
> polysulfide (liver of sulfur) 7.5 g
> sodium carbonate mono 2.5 g
> water to make 1 liter.
> Agitate print for 15-20 min at 68F, for 3-4 min at 100 F.
> This has the advantage that you can still make it if Kodak
> both KRS and brown toner, also polysulfide doesn't stink.
> What is Kodak's current brown toner? Their old brown
> something fierce -- so it was sodium sulfide, not
polysulfide. If you're
> not making it with polysulfide, it's not the same thing
T-8 is a less concentrated version of KBT. KBT is a
polysulfide toner. According to Doug Nishimura of IPI the
ability of a polysulfide toner to tone all densities evenly
is partly dependant on the concentration of the stock
solution, the more concentrated the better.
Both T-8 and KBT will smell strongly of hydrogen sulfide
(rotten eggs) when somewhat exhausted or if any acid gets
into them. IPI designed a Polysulfide toner for archival
treatment of microfilm using Borax as the alkali partly
because it smells less than KBT. However, KBT works fine for
archival protection. I think Doug said T-8 would also.
--- Richard Knoppow Los Angeles, CA, USA email@example.com
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