Hi Pip, We use potassium dichromate. ________________________________ De : Frameworks <[email protected]> de la part de FrameWorks Admin <[email protected]> Envoyé : lundi 6 septembre 2021 14:50 À : Experimental Film Discussion List <[email protected]> Objet : Re: [Frameworks] chemistry in artists-run labs
Dear Esther, Are you using permanganate bleach or potassium dichromate (R9)? Pip Chodorov On Sep 6, 2021, at 9:42 PM, Esther Laurent-Baroux <[email protected]<mailto:[email protected]>> wrote: We regularly have problems with C4 : the films often come out gray, with little contrast, and with kinds of white spots, especially in the blacks. I wondered if other labs had the same kind of problems, and if this is due to the collective management of chemicals and their production.
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