[Alt-photo] Re: DAS

[Greg Schmitz]

Kees,

I bought some, for carbon primarily.  Unfortunately my darkroom is 
dismantled at the moment and I probably won't get to try it for a couple 
of months.  Thanks for posting your experience with casein.

--greg


On 4/12/13 10:37 AM, Kees Brandenburg 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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