[Alt-photo] Platinum Rag arrived!

Clay Harmon clay at clayharmon.com
Sun Apr 10 16:55:05 UTC 2016

Any idea how long the powdered DAS lasts if stored in a lightproof container? 

There was a group purchase in the US back in 2013 spearheaded by Chris Holmquist and I still have some sitting in my chemical drawer from that purchase 3 years ago. 

Christina got me fired up with casein printing last weekend, and while I'm in the mucking about and learning stage I thought I'll give it a shot with DAS in addition to the potassium dichromate I have been using. 

But still,  I am curious what other's experiences are with its longevity in powdered form.

-ClayOn Apr 10, 2016, at 12:06 PM, Bert Kuijer via Alt-photo-process-list <alt-photo-process-list at lists.altphotolist.org> wrote:

> DAS = Diazidostilbene
> I saw it offered in France for Euro 24 for 25 grams. See:
> http://www.phototypie.fr/product.php?id_product=14&id_lang=1
> (I don't know this site or supplier myself, though)
> Bert from Holland
> 2016-04-10 17:56 GMT+02:00 Jorj Bauer via Alt-photo-process-list <
> alt-photo-process-list at lists.altphotolist.org>:
>> ... Kees pointed me at a supplier in China a few years back. We've talked
>> about them on list a few times.
> _______________________________________________
> Alt-photo-process-list | altphotolist.org

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