[pure-silver] Re: Self-Made HypoClear any good?

Well, for what it's worth here is the Cookbook formula for HCA:
 
quote:
FORMULA #190 Hypo Clearing Agent (HCA)
 
Water (125 F/52 C)    750.0 ml
Sodium sulfite        200.0 g
*Sodium bisulfite      50.0 g
Water to make            1.0 liter
 
*The sodium bisulfite lowers the pH in order to prevent softening of  
emulsion of film.  If paper is to be used the bisulfite may be left out in  
order to 
improve the papers gloss.
end quote
 
It goes on to suggest double weight paper papers after a 1 minute rinse  
after fixing needs only a 3 minute HCA bath with agitation and a final running  
water wash of 20 minutes.
 
I've been using this method for a couple of years and have had no bad  
experiences.
 
 
Bruce  Osgood
Camclicker @ aol.com
Brooklyn,  NY.

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