[pure-silver] Re: Atomal?
- From: Helen Bach <helenbach@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 20 Jan 2005 00:13:29 -0500
Amidol is 2,4-diaminophenol hydrochloride, isn't it? Or is it just
2,4-diaminophenol?
Atomal was a developer made by Agfa and it was also a patented
developing agent made by Agfa. Agfa patented Atomal, then, as I
understand, May and Baker discovered that its low graininess and good
film speed could be maintained, but the developing time halved, if it
was mixed with glycin - and thus Promicrol was born.
It's a bit like Rodinal, I guess. There's a developer called Rodinal,
and the developing agent that goes by the simplified name of
p-aminophenol is also called Rodinal. Atomal is a derivative of
o-aminophenol, as it happens.
Best,
Helen
> Ummm, my brain may have completely failed here, but as I recall
> Atomal is a developer made by Agfa. I think what you want is Amidol.
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