[pure-silver] Formulating FD-72 Fogging Developer
- From: "Pat Foster" <foster12158@xxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 11 Apr 2006 17:29:54 -0400
I'm interested in processing black and white slides and would like to use a
fogging developer (as in the Kodak T-Max kit) rather than light reversal
exposure.
The published formulations for FD-72, a fogging developer evidently used by
a number of people for movie film, is a mixture of sodium dithionite (aka
sodium hydrosulfite) , cysteine, and sodium metaborate.
I have several questions concerning obtaining the sodium dithionite:
1) Does anyone know a source of small quantities of sodium dithionite at a
reasonable price?
2) A potential source of sodium dithionite would appear to be RIT Color
Remover. This is available virtually everywhere, even Wal-Mart.
The MSDS for RIT Color Remover inicates that is a mixture of sodium
dithionite, sodium carbonate, sodium metasilicate, and EDTA. Has anyone used
the Color Remover as a fogging developer? Does anyone have information on
the weight percent dithionite in the RIT COlor Remover (or the Carbona Color
Remover which seems to be a similar mixture)? Potentially, it would seem
that the Color Remover could be used directly with just the addition of some
borax to adjust pH.
I would also appreciate information on alternative fogging developers which
produce a black and white, rather a than brown or sepia, image.
_________________________________________________________________
FREE pop-up blocking with the new MSN Toolbar ? get it now!
http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
=============================================================================================================
To unsubscribe from this list, go to www.freelists.org and logon to your
account (the same e-mail address and password you set-up when you subscribed,)
and unsubscribe from there.
Other related posts:
