[Frameworks] eco-bleach effective when tinting/toning?
Morgan Hoyle-Combs
mhoylecombs at yahoo.com
Mon Feb 28 21:35:21 UTC 2022
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, <robert at ontosmedia.com> 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
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