[Alt-photo] Re: DAS

[Kees Brandenburg]

The safelight is most important when handling the powder, because the powder itself is also light sensitive. As I have  sodium vapor safe lights, that give a lot of light, I allways use these. The spectral absorption peak is around 335 nm. Handling of mixed emulsions can be done under  normal dim room conditions.

http://www.apug.org/forums/viewpost.php?p=1228646

The hardener #3 mentioned in this post is DAS (CAS: 2718-90-3)

-k



On 17 apr. 2013, at 08:58, Loris Medici <mail at loris.medici.name> wrote:

> OK one more question, just noticed the "safelight" remark; what's the
> spectral sensitivity of DAS - will it harden gelatin under tungsten
> lighting?
> 
> Regards,
> Loris.