[Alt-photo] Re: DAS

[Loris Medici]

Thanks Kees,

I asked this because (if I plunge into it) my plan is to dry the
tissues face down, paper side up on plexi sheets in my hallway with
very dim indirect daylight. (Curtains closed in the next room, light
bouncing from the walls into the hallway...) I was wondering if the
tissue may fog in this case?

Regards,
Loris.


2013/4/17 Kees Brandenburg <workshops at polychrome.nl>:
> 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.