[Alt-photo] Kallitype issue
jorj at jorj.org
Wed Dec 20 12:12:43 UTC 2017
I always start with the brushes. It's so easy to cross contaminate them. But that's usually black spots.
Can you post an image?
Sent from my iPhone
> On Dec 19, 2017, at 22:29, Robert Krawiec via Alt-photo-process-list <alt-photo-process-list at lists.altphotolist.org> wrote:
> Hi All,
> I was wondering if there are any kallitype experts out there that can help me with an issue...
> I'm seeing these strange white spots on my prints. They are about 1mm in diameter, usually 2 to 5 per print. At first I thought they were paper fragments or sensitizer stains on my contact frame glass, but I've eliminated those possibilities. It also isn't paper-dependent as it occurred with 3 different papers.
> This was my second printing session of the week using the same developer (50% ammonium citrate developer mixed with 50% sodium acetate). I noticed a lot of black particles in the developer, so perhaps this is the source of the white spots? I did replenish the developer after the first session, adding 100ml fresh.
> Another thought I had was that the fix was the issue, with perhaps undesolved sodium thiosulfate sitting on the paper and bleaching it.
> Anyhow, does anyone have any ideas or suggestions?
> Rob K.
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