[Alt-photo] Luis Nadeau
smieglitz at gmail.com
Wed Oct 25 19:58:45 UTC 2017
IIRC, a couple years ago someone on the list suggested using a
diazo-stilbene (?) compound as a substitute for the dichromates in gum
printing. Did anyone on the list experiment with that compound? Results?
On Wed, Oct 25, 2017 at 9:36 AM, Jacques Kevers via Alt-photo-process-list <
alt-photo-process-list at lists.altphotolist.org> wrote:
> As for the "ateliers Fresson", I asked them.
> Their reply was: "No problems for us. Our inventory will last for numerous
> Best regards,
> By the way, although the ban is also effective now in Belgium, several
> members reported they still were able to buy some without questions nor
> restrictions... besides skyrocketing prices ( around 120€/kg instead of
> around 20...).
> I found quite interesting the discussion about people regretting that some
> intend continuing to use dichromates despite of its dangers... As far as I
> know, quite a lot of people decide continuing to use their cars without
> this being questioned by anybody, while car accidents are a quite common
> cause of deaths :-)... At Picto Benelux, we have sessions where we tell
> people how to handle adequately dichromates (or other products), and how to
> dispose adequately of waste products. As for dichromates, the Cr(VI) can be
> reduced relatively easily to (less dangerous) Cr(III) using sodium
> metabisulfite, and the remaining Cr(III) precipitated using a NaOH +
> Ca(OH)2 mix...
> Jacques Kevers
> Beau Site
> Première Avenue 7
> B-1330 Rixensart
> +32 2 653 56 02
> 2017-10-23 15:18 GMT+02:00 Christina Z. Anderson via Alt-photo-process-list
> <alt-photo-process-list at lists.altphotolist.org>:
> > Intersting, Kees.
> > Nadeau has quite the biography. He was on the list and then off before I
> > arrived on the list in 1999 I think. So I’ve never known him although I
> > have his platinum and carbon books and they are quite good resources.
> > I notice at the bottom that he seems to have gotten the Fresson machine
> > work and make prints.
> > I wonder a couple things: if he ever succeeded in doing tricolor work and
> > also if Fresson will no longer be able to do dichromated prints in France
> > if dichromate is now banned.
> > Chris
> > > On Oct 23, 2017, at 2:13 AM, Kees Brandenburg via
> > <alt-photo-process-list at lists.altphotolist.org> wrote:
> > >
> > > I Just noticed blogger redirects to localized url’s. So you better go
> > the .com address of Luis his blogspot site:
> > > http://photoconservation-encyclopedia.blogspot.com/
> > >
> > > The url redirection seems not allways to work that well I noticed.
> > >
> > > -k
> > >
> > >
> > >
> > >
> > >> He just announced the new edition of his encyclopedia here:
> > >> http://photoconservation-encyclopedia.blogspot.nl/
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