[pure-silver] Re: HCA (was dichroic fog)
- From: "Ryuji Suzuki" <rs@xxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Wed, 05 Apr 2006 16:44:41 -0400
On Wed, 5 Apr 2006 09:09:11 -0400, "Koch, Gerald" <gkoch02@xxxxxxxxxx>
said:
> Five grams each of EDTA and citric acid represent the maximum percentage
> as listed in the MSDS. As Richard suggested 2 grams each is probably a
> more realistic amount and would save money. Actually when I use a
> clearing agent I make it extemporaneously using spoon measure and
> discard it after the session. The EDTA and citric acid are not needed
> then and the darkroom is not cluttered with jugs and tanks.
Necessity of EDTA and citrate comes from the kind of water and fixer
used, as Richard cited Henn et al, and it is independent of whether you
use it one shot or not.
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