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Digital BW, The Print

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[Digital BW] Re: Buffered or Unbuffered Matt Board

2006-01-10 by scott_now_coming

Heico Perma Wash is the way to go. Assuming they still make it. It's 
been a few years since I last bought a quart.

Scott

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Peter De Smidt 
<pdesmidt@T...> wrote:
>
> helen_bach2003 wrote:
> 
> >I thought that Wilhelm mentioned Kodak Hypo Clearing Agent in his
> >book, not hypo eliminator. They are two different things. Hypo
> >eliminator is not recommended because of the nature of its action;
> >KHCA is OK. I must ahve missed the reference to hypo eliminator.
> >
> >Best,
> >Helen 
> >
> >  
> >
> Yep, they are very different. Hypo Clearing Agent is mainly sodium 
> sulfite, whereas Hypo Eliminator is amonia, hydrogen peroxide and 
> water.  And yes I'm sure that he recommended Hypo Eliminator, 
followed 
> by selenium toning, in the first edition of the book in question.  
Note: 
> not only shouldn't one use Hypo Eliminator, but light selenium 
toning 
> doesn't give near the protection that was once thought, at least it 
> doesn't according the the Image Permanence Institute at RIT.
>

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