Quote Originally Posted by Klainmeister View Post
What color is your SN solution? I'm having a very similar issue with the Athentype and realized that I have way more precipitant than I recall in the past. EDTA helped quite a bit with mine, but somewhat in the same boat as you. I'll escalate this discussion to Dick Sullivan Thursday night and see what he has to say.
My Silver Nitrate solution appears pretty much clear. It was made in 2006 and is in a small brown bottle which has been kept in the dark.

I'm curious about this Athenatype process. Could someone please tell me it's benefits over the kallitype/vandyke/argyrotype processes. Does it clear better and have better dmax? How does that work chemically?
Most of which I found has to do with the fumed silica aspect and not the actual process.