Thanks Robert and Morgan. Robert, I don’t know what re-halogenating bleach is. Can anyone else confirm Robert’s sense that that is what’s needed for toning, so that eco-bleach wouldn’t work. Ricardo or Dawn, any thoughts on this?
Morgan, hi! and yes. I was only able to source 12% hydrogen peroxide. I diluted it to 9% and that has worked well with acetic acid when developing 7363. thanks, Sarah http://www.SarahBlissArt.com > From: Morgan Hoyle-Combs <[email protected]> > Subject: Re: [Frameworks] eco-bleach effective when tinting/toning? > Date: February 28, 2022 at 4:35:21 PM EST > To: Experimental Film Discussion List <[email protected]> > > Also, keep in mind that 9% peroxide is not available in the US. I was able to > get some acetic acid 12% peroxide which has to be diluted to 9%. I have a > formula for this and would like to try it out on some Plus-X of mine. > > Also, hi Sarah. > > M > On Monday, February 28, 2022, 02:16:32 PM EST, <[email protected]> wrote: > > > I haven't tried using eco-bleach for toning, but my understanding is > that you need to use a re-halogenating bleach, and eco-bleach is not > that. It's more like the dichromate R9 bleach, and not what you need > for conventional toning. > > On 2022-02-28 11:38, Sarah Bliss wrote: > > Greetings friends and colleagues, > > > > When reversal developing 7363, I’ve been happily using an eco-bleach > > alternative based on Ricardo Leite’s recipe with some tweaks > > suggested by Dawn George. It works really well! Ingredients are 9% > > hydrogen peroxide and 5% acetic acid. > > > > Question: can this eco-bleach also effectively replace standard bleach > > when tinting/toning film, or does one need to use potassium > > ferricyanide + Potassium bromide for that? > > > > If yes, any data on how long to bleach the film before tinting or > > toning? > > > > thanks kindly, > > > > Sarah Bliss > > http://www.SarahBlissArt.com <http://www.sarahblissart.com/> > > -- > Frameworks mailing list > [email protected] <mailto:[email protected]> > https://mail.film-gallery.org/mailman/listinfo/frameworks_film-gallery.org > <https://mail.film-gallery.org/mailman/listinfo/frameworks_film-gallery.org>
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