[Alt-photo] Re: DAS

[Keith Gerling]

I purchased some to use with casein.  I haven't tried it yet, but I'm happy
to hear you've had good success with it.  Would you mind sharing your
casein procedure?

Keith


On Fri, Apr 12, 2013 at 1:37 PM, Kees Brandenburg
<workshops at polychrome.nl>wrote:

> I was wondering if there are people on the list who participated in the
> DAS group buy that was organized some time ago.
> DAS is the acronym for 4,4'-Diazidostilbene-2,2'-disulfonic acid, disodium
> salt, tetrahydrate and is a non- or less toxic replacement for dichromates
> in carbon printing. I am using it for some years now and am quiet happy
> with it. Most handy is the non existing dark effect. Carbon tissue can be
> made presensitized. This speeds up printing a lot.
>
> Recently I also tested it with casein and found out that it works
> extremely well!  I am looking forward hearing other people's experience
> with this powder!
>
> Kees
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